KR20150022621A - bubble generating apparatus - Google Patents

Abstract

The present invention relates to a bubble generator which comprises a bubble injection part located on the lower part of a water tank to be parallel to the water surface, and including multiple penetration holes on the front end surface facing the water surface; and a bubble cutting part including multiple penetration holes facing the multiple penetration holes of the bubble injection part while contacting with the front end surface of the bubble injection part to be slid, wherein anyone among the bubble injection part and the bubble cutting part is a rotated body and the other one is a fixed body.

Description

A bubble generating apparatus

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble generator, and more particularly, to a vertical bubble generator that is submerged in water to generate fine bubbles.

Bubbles are the pockets of gas in the liquid, that is, bubbles.

Small bubbles having a bubble diameter of about 100 占 퐉 are called micro bubbles and have a larger volume surface area and longer residence time in the liquid than bubbles of a diameter. Various applications are expected.

Generally, in a bubble generator for generating micro bubbles, a method of blowing gas into liquid through a porous body is used.

As such a bubble generator, gas is supplied through a porous body to a pipe through which water flows from a gas supply device such as a compressor, thereby generating fine bubbles.

In the recently developed bubble generator, a method of dividing the bubble by applying a shearing force to the bubble surface is often used.

The bubble generator includes a container body having a conical space, a pressurized liquid introduction port opened in a tangential direction on a part of the inner wall circumferential surface of the space, a gas introduction hole opened in the bottom of the conical space, There is a swirl bubble generator composed of a swirling gas-liquid outlet hole opened at the top of the space.

However, in the bubble generator using the porous body, since the bubble is not easily separated from the porous body, the generated bubble becomes larger than the pore diameter of the porous body, and a small bubble can not be generated.

In addition, as a method of rotating the porous body, large bubbles are generated from the vicinity of the center of the rotation axis in which the influence of rotation is small, so that the diameter of the bubbles generated under optimum conditions is limited to about 0.4 mm.

In this regard, in the swirl type bubble generator, since a shearing force is applied to the bubble surface, small bubbles can be generated. However, in order to forcibly apply the swirling flow to the fluid, since the gas is pressurized and supplied to the conical container body, the pressure loss increases and the ratio of the bubbles in the liquid becomes lower as compared with the case where the porous body is used It remained a problem.

In order to solve this problem, a discharge port of a gas supply pipe, which is driven to rotate by a pulley, is disposed in the axial axis of a motor disposed outside the water tank, and a gas inlet is connected to the discharge port, Korean Patent No. 10-1157719 proposes a method for generating minute bubbles by the shear force generated by the relative movement between water in the bubble generator and the rotating bubble. However, in the bubble generator of the above scheme, Is cut only by the shear force, the size of the generated bubble is not constant, and the size of the bubble can not be freely adjusted.

A bubble generator for solving such a problem is disclosed in Patent Registration No. 10-1231689 filed by the present inventor.

The bubble generator described above forcibly cuts the bubbles discharged through the through holes of the inner tube by rotating the inner tube in a state in which an outer tube having a plurality of through holes formed on the circumferential surface is formed in an inner tube having a plurality of through holes formed on the circumferential surface, A large amount of bubbles of a certain size can be generated and the size of the bubbles generated according to the rotation speed of the inner tube can be adjusted.

Another bubble generator is disclosed in Japanese Patent Application Laid-Open No. 10-2013-0102025 filed by the present inventor.

In the bubble generator described above, a ball or a roller is interposed between an inner tube and an outer tube to open / close a through hole formed in the inner tube so that bubbles discharged through the through hole are cut to form a fine bubble.

However, since the conventional bubble generator is horizontally disposed in the water, the bubble discharged from the plurality of through holes having a height difference in the vertical direction is different in magnitude of the water pressure received in the water and discharged into the water .

The present invention has a problem in solving the above-mentioned problems.

According to a first aspect of the present invention, there is provided a bubble injection apparatus comprising a bubble injection unit having a plurality of through holes formed in a lower end of a water tub parallel to a water surface and facing a water surface, And a plurality of through holes formed in the main injection unit, the plurality of through holes being opposed to the plurality of through holes in the main injection unit, wherein one of the bubble injection unit and the bubble cut unit is a rotating body and the other is a fixed bubble generator. .

According to a second aspect of the present invention, there is provided a bubble injection apparatus comprising a bubble injection unit having a plurality of through holes formed in a lower end portion of a water tank parallel to a water surface and facing a water surface, And a plurality of blades extending in the radial direction of the bubble injecting unit and spaced apart from each other by a predetermined distance in a circumferential direction of the bubble injecting unit, wherein one of the bubble injecting unit and the bubble cutting unit is a rotating body, Generator can be provided.

According to a third aspect of the present invention, there is provided a bubble injection apparatus comprising: a bubble injection unit having a plurality of through holes formed in a distal end face thereof facing a water surface, the bubble injection unit being positioned at a lower portion of a water tank, And a bubble cutting portion interposed between the bubble injecting portion and the bubble cutting portion and having a plurality of balls or rollers passing across a plurality of through holes formed in a front end surface of the bubble cutting portion, And the other is a stationary chain bubble generator.

In a fourth aspect of the present invention, there is provided an internal pipe in which a plurality of balls, a roller, a ball plunger, a valve piece, an elastic piece, or a seesaw piece are provided on an inner surface of a circumferential surface of which a plurality of through- The present invention can solve the above problems by providing a bubble generator in which an outer tube having a plurality of through holes formed on its peripheral surface is circumscribed and either one of the inner tube and the outer tube is a rotating body and the other is fixed.

According to the problem solving means of the first to third aspects of the present invention, the bubble cutting portion having a simple structure is made to fall into the water tank through the through hole of the bubble injecting portion having the same height level in the vertical direction, It is possible to finely cut the outgoing air or the bubble of the gas so that the generated bubble can be freely adjusted while the size of the generated bubble is kept constant so that the minute bubble can be easily generated in a more stable manner than in the prior art.

According to the problem solving means of the fourth aspect of the present invention, by means of a plurality of balls, rollers, ball plungers, valve pieces, resilient pieces or seesaws having a simple structure, It is possible to finely cut air or gas bubbles that escape into the water tank without being affected by the depth of the water through the holes so that the generated bubbles can be freely adjusted while being constant in size, In a large amount.

1 and 2 are conceptual diagrams showing the bubble generator of the first embodiment,
Figs. 3 and 4 are conceptual diagrams showing the bubble generator of the second embodiment,
5 and 6 are conceptual diagrams showing the bubble generator of the third embodiment;
7 and 8 are conceptual diagrams showing the bubble generator of the fourth embodiment;
Figures 9 and 10 illustrate alternative embodiments of the bubble generator of the third and fourth embodiments.
11 and 12 are conceptual diagrams showing the bubble generator of the fifth embodiment.
Figs. 13 to 18 are conceptual diagrams showing embodiments in which the planetary gear of Fig. 13 can be rotated. Fig.
19 and 20 are conceptual diagrams showing a bubble generator in another embodiment of the fifth embodiment.
FIG. 21 is a conceptual diagram showing a bubble generator of a sixth embodiment. FIG.
22 is a view showing the ball plunger of FIG. 21. FIG.
23 is a conceptual diagram showing the bubble generator of the seventh embodiment;
24 is a conceptual diagram showing the bubble generator of the eighth embodiment;
25 is a conceptual diagram showing the bubble generator of the ninth embodiment;
26 is a conceptual diagram showing the bubble generator of the tenth embodiment;
27 is a view showing the bubble generator of the eleventh embodiment;
28 is a conceptual diagram showing the bubble generator of the twelfth embodiment;
29 is a conceptual diagram showing the bubble generator of the thirteenth embodiment;
Figs. 30 and 31 are conceptual diagrams showing the bubble generator of the fourteenth embodiment; Fig.
32 is a conceptual diagram showing the bubble generator of the fifteenth embodiment;
33 is a conceptual diagram showing the bubble generator of the sixteenth embodiment;
34 is a conceptual diagram showing the bubble generator of the seventeenth embodiment

In the following description of the embodiments, explanation will be made on the assumption that the pressure for supplying the gas is larger than the water pressure of the water tank.

Hereinafter, the bubble generator of the first embodiment according to the present invention will be described in detail with reference to Fig.

Fig. 1 shows the bubble generator of the first embodiment.

In the water in the water tank 1, the tip end portion of the inner pipe 2, which is the rotating body, is disposed in a state in which it is erected in the vertical direction.

The base end of the inner pipe 2 is connected to a gas supply pipe 5 disposed outside the water tank 1 via a swivel joint 4. The gas supplied from the gas supply pipe 5 is supplied to the inner pipe 2 do. In this case, a plurality of fine holes are formed in the distal end portion of the inner pipe 2, and the gas is injected into the liquid in the water tank 1 through the fine holes.

That is, the inner tube 2 has a tubular portion with its tip closed, and a cavity 11 is formed therein. A plurality of through holes 12 are formed on the circumferential surface of the distal end portion of the inner tube 2 in an axial direction and in a circumferential direction.

The diameter of the plurality of through holes (12) is increased from the vertical direction toward the bottom in consideration of water pressure along the water depth.

The proximal end of the inner tube 2 is fixedly engaged with the tubular rotor 83 of the motor 80 fixed to the base or the bracket provided in the water tank and is rotatably supported by the case 81 of the motor 80 via a bearing Respectively.

A plurality of retainers 30 fixed to the outer tube 2 are circumscribed by a plurality of balls 7a or a plurality of rollers 7b at the distal end of the inner tube 2 so that the distal end of the inner tube 2 contacts the plurality of retainers 30. [ And the plurality of retainers 30 are fixed to the base.

The plurality of retainers (30) have a ring shape to cover a plurality of through holes (12) arranged in the circumferential direction of the inner tube (2), and a plurality of through holes And is disposed for each through hole in the axial direction so as to cover the hole 12. [

When a plurality of balls 7a are interposed between the plurality of retainers 30 and the distal end of the inner tube 2 as shown in Fig. 1, the inner peripheral surface of the plurality of retainers 30 and the inner tube A plurality of ring-shaped concave portions 6 spaced a predetermined distance in the axial direction of the inner tube 2 are formed on at least one of outer circumferential surfaces of the inner tube 2 And the plurality of balls 7a are in contact with the plurality of recesses 6 in the circumferential direction or spaced apart from each other by a predetermined distance, And the plurality of balls 7a pass across the plurality of through holes 12 when the inner tube 2 rotates. 1 shows that the plurality of recesses 6 are formed only in the inner tube 2. [

When a plurality of rollers 7b are interposed between a plurality of retainers 30 and the distal end portion of the inner tube 2, the inner tube 2 is provided on the outer peripheral surface of the distal end portion of the inner tube 2, The recessed portion 6 is formed with a plurality of through holes 12 in the circumferential direction of the inner tube 2 and in the axial direction at regular intervals, And a plurality of rollers 7b are seated on the recessed portion 6 in a circumferential direction spaced apart from each other by a predetermined distance, Through the plurality of through holes (12).

The bubble generator of the first embodiment configured as described above can be operated as follows.

When the gas is supplied from the gas supply pipe 5 to the inner pipe 2 and the motor 80 is operated to rotate the inner pipe 2 there is a gap between the plurality of retainers 30 and the tip of the inner pipe 2 A plurality of balls 7a or a plurality of rollers 7b are rotated in the circumferential direction of the inner tube 2 and each of the rotating balls 7a or the plurality of rollers 7b is rotated in the inner tube 2. [ Passing through the plurality of through holes 12 arranged in a straight line in the circumferential direction of the inner tube 2 so that a bubble which is a gas ejected from the plurality of through holes 12 of the inner tube 2 flows through the plurality of balls 7a, The diameter of the plurality of through holes 12 becomes larger as it goes down from the vertical direction in consideration of the water pressure along the water depth, The bubble of the small diameter is constant Diameter.

Hereinafter, the bubble generator of the second embodiment according to the present invention will be described in detail with reference to FIG.

3 shows the bubble generator of the second embodiment.

In the water in the water tank 1, the distal end portion of the inner pipe 2 of the fixed chain is disposed in a state of standing in the vertical direction.

The proximal end of the inner tube 2 is connected to a gas supply pipe 5 disposed outside the water tub 1 and the gas sent from the gas supply pipe 5 is supplied to the inner pipe 2. [ In this case, a plurality of fine holes are formed in the distal end portion of the inner pipe 2, and the gas is injected into the liquid in the water tank 1 through the fine holes.

That is, the inner tube 2 has a tubular portion with its tip closed, and a cavity 11 is formed therein. A plurality of through holes 12 are formed on the circumferential surface of the distal end portion of the inner tube 2 in an axial direction and in a circumferential direction.

The diameter of the plurality of through holes (12) is increased from the vertical direction toward the bottom in consideration of water pressure along the water depth.

The proximal end of the inner tube 2 is fixed to a bracket provided on the base or water tub.

A plurality of retainers 30 as a rotating body are circumscribed by a plurality of balls 7a or a plurality of rollers 7b to be rotatable with respect to the inner tube 2 at the distal end of the inner tube 2. [

Each of the plurality of retainers 30 has a gear portion 31 formed on the outer circumferential surface thereof so as to function as a rotating body and is fixed to the drive shaft 32 of the motor M And a plurality of drive gears 33 circumscribed by the drive gears 33 are engaged.

The plurality of retainers (30) have a ring shape to cover a plurality of through holes (12) arranged in the circumferential direction of the inner tube (2), and a plurality of through holes And is disposed for each through hole in the axial direction so as to cover the hole 12. [

When a plurality of balls 7a are interposed between the plurality of retainers 30 and the distal end portion of the inner tube 2 as shown in Fig. 3, the inner peripheral surface of the plurality of retainers 30 and the inner tube A plurality of ring-shaped concave portions 6 spaced a predetermined distance in the axial direction of the inner tube 2 are formed on at least one of outer circumferential surfaces of the inner tube 2 And the plurality of balls 7a are in contact with the plurality of recesses 6 in the circumferential direction or spaced apart from each other by a predetermined distance, And the plurality of balls 7a pass across the plurality of through holes 12 when the retainer 30 rotates. 3 shows that the plurality of recessed portions 6 are formed only in the inner pipe 2. [

When a plurality of rollers 7b are interposed between the plurality of retainers 30 and the distal end portion of the inner tube 2, the inner tube 2 is provided on the outer peripheral surface of the distal end portion of the inner tube 2, The recessed portion 6 is formed with a plurality of through holes 12 in the circumferential direction of the inner tube 2 and in the axial direction at regular intervals, And the plurality of rollers 7b are seated on the recessed portion 6 in a circumferential direction with a predetermined distance therebetween and the plurality of rollers 7b are seated on the recessed portions 6a, Through the plurality of through holes (12).

The bubble generator of the second embodiment configured as described above can be operated as follows.

When the motor M is operated to rotate the retainer 30 while supplying the gas from the gas supply pipe 5 to the inner pipe 2, the plurality of retainers 30 are interposed between the distal ends of the inner pipes 2 A plurality of balls 7a or a plurality of rollers 7b are rotated in the circumferential direction of the inner tube 2 and each of the rotating balls 7a or the plurality of rollers 7b is rotated in the inner tube 2. [ Passing through the plurality of through holes 12 arranged in a straight line in the circumferential direction of the inner tube 2 so that a bubble which is a gas ejected from the plurality of through holes 12 of the inner tube 2 flows through the plurality of balls 7a, The diameter of the plurality of through holes 12 becomes larger as it goes down from the vertical direction in consideration of the water pressure along the water depth, The bubble of the small diameter is not And has a fixed diameter.

Hereinafter, the bubble generator of the third embodiment according to the present invention will be described in detail with reference to Figs. 5 and 6. Fig. 5 shows the bubble generator of the third embodiment.

In the water in the water tank 1, the distal end portion of the inner pipe 2 fixed to the base is disposed in a state of standing in the vertical direction.

The proximal end of the inner tube 2 is connected to a gas supply pipe 5 disposed outside the water tub 1 and the gas sent from the gas supply pipe 5 is supplied to the inner pipe 2. [ In this case, a plurality of fine holes are formed in the distal end portion of the inner pipe 2, and the gas is injected into the liquid in the water tank 1 through the fine holes.

That is, the inner tube 2 has a tubular portion with its tip closed, and a cavity 11 is formed therein. A plurality of through holes 12 are formed on the circumferential surface of the distal end portion of the inner tube 2 in an axial direction and in a circumferential direction.

The diameter of the plurality of through holes (12) is increased from the vertical direction toward the bottom in consideration of water pressure along the water depth.

The proximal end of the outer tube 3, which is a rotating body fixedly attached to the tubular rotor 83 of the motor 80 fixed to the base or the bracket provided in the water tub, is rotatably supported at the proximal end of the inner tube 2 via a bearing And the fleet is blocked.

The outer tube 3 has a tubular portion with a closed end, and is rotatably mounted to the water tub 1 via a bearing.

The motor 80 includes a stator 82 inscribed in the case 81 and a tubular rotor 83 which is inscribed inside the stator 82 with a predetermined gap radially inward.

The proximal end of the outer tube 3 is rotatably circumscribed by the inner tube 2 via a bearing and fixedly inserted in the tubular rotor 83 and rotatably mounted to the case 81 via a bearing have.

The distal end of the outer tube 3 is rotatably circumscribed by a plurality of balls 7a or a plurality of rollers 7b on the distal end of the inner tube 2. A plurality of through holes 13 Are spaced apart in the axial direction and in the circumferential direction.

5, the inner peripheral surface of the distal end portion of the outer tube 3 and the inner peripheral surface of the inner tube 2 (see Fig. 5) are provided with a plurality of balls 7a interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2. [ , A plurality of ring-shaped concave portions (6) spaced at a predetermined distance in the axial direction of the inner tube (2) are formed so as to allow the plurality of balls (7a) to be seated, A plurality of the plurality of through holes 12 are formed in each of the plurality of recesses 6 of the inner tube 2 at regular intervals in the circumferential direction of the inner tube 2, ) Or the plurality of recesses (6) of the outer tube (3) in a circumferential direction or spaced apart from each other by a predetermined distance, and the plurality of balls (7a) ). ≪ / RTI > 5 shows that the plurality of recessed portions 6 are formed only in the inner pipe 2. As shown in Fig.

As described above, the bubble generator employing a plurality of balls is configured such that when the motor 80 is operated to rotate the outer tube 3 while supplying gas from the gas supply tube 5 to the inner tube 2, A plurality of balls 7a interposed between the inner tube 2 and the distal end of the inner tube 2 are rotated in the circumferential direction of the inner tube 2 and each of the plurality of rotating balls 7a is selectively rotated Passes through the plurality of through holes (12) facing each other in the radial direction so that the bubble, which is a gas ejected from the plurality of through holes (12) of the inner tube (2) The diameters of the plurality of through holes 12 become larger as they go downward in the vertical direction in consideration of the water pressure along the water depth, so that the small diameter bubble With this constant diameter state The stand via a plurality of through holes 13 are to be discharged to the tank.

When a plurality of rollers 7b are interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2 as shown in Fig. 6, the inner peripheral surface of the distal end portion of the outer tube 3, (2) is formed on at least one of the inner peripheral surface of the inner tube (2) and the outer peripheral surface of the distal end of the inner tube (2), and the tubular recessed portion (6) (12) and / or the plurality of through holes (13) are formed at regular intervals in the direction of the circumference of the tubular recess (6), and the plurality of rollers (7b) And the plurality of through holes (12) and the plurality of through holes (13) are arranged so as not to face each other in the radial direction at the time of rotation of the outer tube (3) Passes through the plurality of through holes 12 It is to pass. 6 shows that the concave portion 6 is formed only in the inner tube 2. [

As described above, the bubble generator employing a plurality of rollers can be operated as follows.

When the gas is supplied from the gas supply pipe 5 to the inner pipe 2 and the motor 80 is operated to rotate the outer pipe 3, the gas is supplied from the gas supply pipe 5 to the inner pipe 2 through the gap between the front end of the outer pipe 3 and the distal end of the inner pipe 2 A plurality of rollers 7b are rotated in the circumferential direction of the inner tube 2 and each of the plurality of rollers 7b rotates selectively in the radial direction of the plurality of through- The bubbles which are the gases ejected from the plurality of through holes 12 of the inner tube 2 are cut by the plurality of rollers 7b to have small diameter bubble particles , And the diameter of the plurality of through holes (12) is larger in the vertical direction in consideration of the water pressure along the water depth, so that the bubble of small diameter has a constant diameter, (13) Zorro is to be released.

Hereinafter, the bubble generator of the fourth embodiment according to the present invention will be described in detail with reference to FIG. 7 and FIG.

Fig. 7 shows the bubble generator of the fourth embodiment.

In the water in the water tank 1, the tip end portion of the inner pipe 2, which is the rotating body, is disposed in a state in which it is erected in the vertical direction.

The base end of the inner pipe 2 is connected to a gas supply pipe 5 disposed outside the water tank 1 via a swivel joint 4. The gas supplied from the gas supply pipe 5 is supplied to the inner pipe 2 do. In this case, a plurality of fine holes are formed in the distal end portion of the inner pipe 2, and the gas is injected into the liquid in the water tank 1 through the fine holes.

That is, the inner tube 2 has a tubular portion with its tip closed, and a cavity 11 is formed therein. A plurality of through holes 12 are formed on the circumferential surface of the distal end portion of the inner tube 2 in an axial direction and in a circumferential direction.

The diameter of the plurality of through holes (12) is increased from the vertical direction toward the bottom in consideration of water pressure along the water depth.

The proximal end of the inner tube 2 is fixedly engaged with the tubular rotor 83 of the motor 80 fixed to the base or the bracket provided in the water tank and is rotatably supported by the case 81 of the motor 80 via a bearing Respectively.

A distal end portion of the outer tube 3 is fixed to the distal end portion of the inner tube 2 so that the distal end portion of the inner tube 2 is rotatable with respect to the outer tube 3, And is fixed to the case 31 of the casing 80.

The front end of the outer tube 3 is closed and a plurality of through holes 13 are also formed in the circumferential surface of the outer tube 3 in the axial direction and in the circumferential direction.

The motor 80 includes a stator 82 inscribed in the case 81 and a tubular rotor 83 which is inscribed inside the stator 82 with a predetermined gap radially inward.

7 and 8, a plurality of balls 7a or a plurality of rollers 7b (7b) are provided between the distal end of the outer tube 3 and the distal end of the inner tube 2 in the same manner as in the third embodiment, ).

The bubble generator of the fourth embodiment configured as described above can be operated as follows.

When the gas is supplied from the gas supply pipe 5 to the inner pipe 2 and the motor 80 is operated to rotate the inner pipe 2 there is a gap between the front end of the outer pipe 3 and the distal end of the inner pipe 2 A plurality of balls 7a or a plurality of rollers 7b are rotated in the circumferential direction of the inner tube 2. Each of the plurality of rotating balls 7a selectively rotates in a radial direction The bubbles which are the gases ejected from the plurality of through holes 12 of the inner tube 2 are cut by the plurality of balls 7a Each of the plurality of rotating rollers 7b passes across the plurality of through holes 12 which are radially opposed to each other selectively at the time of rotation of the inner tube so that the plurality of through holes 12a of the inner tube 2 12) is the gas The diameter of the plurality of through holes 12 becomes larger as it goes down from the vertical direction in consideration of the water pressure along the water depth The small diameter bubble is discharged to the water tank through the plurality of through holes 13 in a state of having a constant diameter.

In the third to fourth embodiments, on the inner peripheral surface of the outer tube 3 facing the plurality of balls 7a, a plurality of ring-shaped partition walls 71 As shown in Fig. 9, a ring-shaped concave portion capable of receiving a plurality of balls 7a may be formed on the inner circumferential surface of the partition wall portion 71, A ring-shaped spring 75 is interposed on the inner circumferential surface of the plurality of partition walls 71 so as to elastically press the balls 7a radially inward.

10, even when a plurality of cylindrical rollers 7b are interposed between the outer tube 3 and the inner tube 2, the inner circumferential surface of the outer tube 3 is provided with the plurality of rollers 7b A plurality of partition walls 71 in the shape of a ring which come into rolling contact with the plurality of balls 7a or the rollers 7b in the radial direction can be formed spaced apart in the axial direction, A ring-shaped spring 75 is interposed on the inner circumferential surface of the plurality of partition wall portions 71.

The ring-shaped spring 75 is a spring having a property of contracting radially inward, and in order to resiliently press the plurality of balls 7a or the roller 7b radially inward, the plurality of partition walls Shaped spring 75 is elastically retracted and inserted into a groove radially inwardly opened on the inner circumferential surface of the spring 71 so that the opening is smaller than half the diameter of the end surface of the spring 75.

The ring-shaped spring 75 elastically presses the plurality of balls 7a or the roller 7b to assist in blocking the plurality of through holes 12. [

In particular, if the plurality of balls 7a or the rollers 7b have elasticity, it is preferable from the viewpoint that the plurality of through holes 12 can be hermetically sealed.

The recesses are formed in at least one of the inner circumferential surface of the outer tube and the outer circumferential surface of the inner tube in the third to fourth embodiments. However, the present invention is not limited to this, The balls or the plurality of cylindrical rollers may be interposed between the inner circumferential surface of the outer tube and the outer circumferential surface of the inner tube closely or spaced.

Hereinafter, a bubble generator of a fifth embodiment according to the present invention will be described in detail with reference to the drawings.

11, the bobble generator of the fifth embodiment is basically provided with a shout gear 21 on its outer circumferential surface and a plurality of shafts 21 of the shout gear 21 are provided in the axial direction of the shout gear 21 A plurality of through holes (12) spaced apart from each other in a vertical direction and spaced apart from each other in a vertical direction, the inner pipe (2) extending in a vertical direction; An outer tube (3) circumscribed by the inner tube (21) at a predetermined distance in the radially outward direction and provided with an internal gear (31) on the inner peripheral surface; And a plurality of planetary gears (40) interposed between the external gear (21) and the internal gear (31) and meshing with each other.

A plurality of through holes 13 spaced at a predetermined interval in the axial direction of the internal gear 31 are formed in a plurality of valleys of the internal gear 31 of the outer tube 3. [ The outer tube (3) and the downstream end of the inner tube (2) are clogged.

The plurality of planetary gears 40 are arranged such that the protrusions of the plurality of planetary gears 40 are selectively opposed to the plurality of through holes 12 as shown in FIG. A plurality of planetary gears 40 arranged in a line in the axial direction of the inner pipe 2 are selectively provided between the inner pipe 2 and the outer pipe 3 in the axial direction of the inner pipe 2, Or the planetary gear 40 is circumscribed not rotatably or fixedly and axially movably to the planetary gear 41, or the plurality of planetary gears 40 are engaged with the plurality of through holes 12 as shown in Fig. 12 The internal gears 31 and the external gears 21 are spaced apart from each other in the circumferential direction of the internal pipe 2 so as to selectively face the mountain portions of the plurality of planetary gears 40, Optionally, The inner pipe 2 and the outer tube not possible (3) to move in a rotatably or fixedly to the shaft 41 and axially between a can be circumscribed.

13, when the inner tube 2 is rotated by a driving source (not shown) in a state where the outer tube 3 is fixed, the plurality of planetary gears 40 The number of the planetary gears 40 arranged in the circumferential direction of the inner tube 2 in the state where the outer tube 3 is fixed can be rotated and rotated as shown in Fig. When the planetary gears 40 are rotated by a drive source, not shown, the carrier 42 coupled to the axes 41 rotatably or together rotatably inscribed together, the plurality of planet gears 40 rotate and rotate, 15, when the outer tube 3 is rotated by a driving source (not shown) in a state where the inner tube 2 is fixed, the plurality of planetary gears 40 ) Can be revolved and rotated, and as a fourth case, as shown in Fig. 16 A plurality of planetary gears 40 arranged in the circumferential direction of the inner tube 2 in a state in which the inner tube 2 is fixed are connected to a shaft 41 which is rotatably or rotatably inscribed together The planetary gears 40 may be rotated and rotated when the planetary gears 42 are rotated by a driving source not shown in the figure. In a fifth case, as shown in Fig. 17, The plurality of planetary gears 40 may be rotated without idle when the outer tube 3 or the inner tube 2 is rotated by a driving source not shown in the figure, The plurality of planetary gears 40 may be revolved and rotated if the inner tube 2 is rotated by a driving source not shown in a state where the carrier 42 and the outer tube 3 are not fixed.

The rotation of the plurality of planetary gears 40, or the rotation and revolution thereof, is similar to the basic principle of an automatic transmission using known planetary gears, sun gears, and ring gears, and will not be described in detail below.

When the through hole 13 is formed in only the outer tube 3 without the through hole 12 in the inner tube 2, the diameter of the plurality of through holes 13 is set to be the water pressure along the water depth The downstream end of the outer tube 3 and the downstream end of the inner tube 2 are closed while the gas supply tube 5 is connected to the outer tube 2, 19, when a plurality of planetary gears 40 having a short axial direction length are disposed between the inner tube and the outer tube at a certain interval in the axial direction and the circumferential direction, as shown in FIG. 19, The planetary gear 40 must be positioned at a position where it can face the plurality of through holes 13 at the time of rotation of the outer tube 3 or the inner tube 2 and between the inner tube and the outer tube Multiple axes in the axial direction The outer planes 3 and the inner planes 2 may be arranged at any positions of the plurality of planetary gears 40 as shown in Fig. 20 when the planetary gears 40 are arranged at regular intervals in the circumferential direction. The plurality of through holes 13 may be located at any position because the plurality of through holes 13 can face the plurality of through holes 13. [

The bubble generator constructed as above can be operated as follows.

The plurality of planetary gears 40 are rotated by the first to sixth cases and at least one of the inner tube 2 and the outer tube 3 rotates as the planetary gear 40 rotates, The plurality of through holes 12 of the inner pipe 2 are opened or closed by the planetary gear 40 or the plurality of through holes 13 of the outer pipe 2 are opened and closed, Bubbles discharged into the outer tube 3 through the plurality of through holes 12 of the inner tube 2 are blocked by the plurality of planetary gears 40 to generate fine bubbles, 3 and the inner tube 2 and can be discharged into the water tank through the plurality of through holes 13 in the outer tube 3 and the outer tube 3 is connected to the gas supply tube 5 And if there is no through hole in the inner pipe 2, it is discharged into the water tank through the plurality of through holes 13 in the outer pipe 3 The bubbles are blocked by the plurality of planet gears 40 can be a micro-bubble generation.

Further, the diameters of the plurality of through holes (12 or 13) become larger as they go downward in the vertical direction in consideration of the water pressure along the water depth, so that the small diameter bubble has a constant diameter.

Hereinafter, the bubble generator of the sixth embodiment according to the present invention will be described in detail with reference to FIG.

The bubble generator of the sixth embodiment shown in Fig. 21 is different from the bubble generator of the first embodiment only in that a plurality of ball plungers 7 are provided instead of a plurality of balls 7a interposed between the inner tube 2 and the retainer 30 And the remaining configuration is the same as that of the first embodiment.

The base ends of the plurality of ball pluggers (7) are fixed to the inner peripheral surface of the plurality of retainers (30).

When a plurality of ball plungers 7 are interposed between the plurality of retainers 30 and the distal end portion of the inner tube 2 as shown in Fig. 21, the plurality of through holes 12 are formed in the inner tube 2 can be elastically opened and closed by the plurality of ball plungers 7 in rotation.

22, the ball plunger 7 includes a body a having a base end fixed to the retainer 30 and a tip end extending radially inward of the inner tube 2, a body a A spring c built in the bore b and a ball 7a inserted into and retracted from the opening of the bore b at the tip of the bore b, .

The ball plunger 7 is interposed between the spring c and the ball 7a to positively pressurize the ball 7a by the spring c, And a pressure plate (d) in sliding contact with the inner wall of the housing.

In the ball plunger 7, between the ball 7a and the pressure plate d, the ball 7a can freely rotate in all directions including the circumferential direction of the inner tube at the opening of the bore b. A plurality of balls f having a diameter smaller than the diameter of the balls 7a may be interposed.

The diameter of the opening is smaller than the diameter of the ball 7a and a half or more of the ball 7a is inserted into the bore b so that the ball 7a slips out of the bore b (B) elastically pressurizes the outer peripheral surface of the inner tube (2) while protruding and retracting from the opening of the bore (b) to stably open and close the plurality of through holes (12) .

The plurality of balls 7a of the plurality of ball plungers 7 are arranged in a straight line in the circumferential direction of the inner tube 2. The plurality of balls 7a of the plurality of ball plungers 7 can be operated in the same manner as in the first embodiment, The plurality of through holes 12 arranged on the inner tube 2 are reliably opened and closed by the elastic force of the spring c so that the bubble, which is a gas ejected from the plurality of through holes 12 of the inner tube 2, Is cut reliably by the cutter 7a.

Hereinafter, the bubble generator of the seventh embodiment according to the present invention will be described in detail with reference to FIG.

The bubble generator of the seventh embodiment shown in Fig. 23 is different from the bubble generator of Fig. 23 only in that a plurality of ball plungers 7 of the sixth embodiment are provided instead of a plurality of balls 7a interposed between the inner tube 2 and the retainer 30. [ 2, and the remaining configuration is the same as that of the second embodiment.

The bubble generator of the seventh embodiment constructed as described above can be operated in the same manner as the operation of the second embodiment. Particularly, a plurality of balls 7a of the plurality of ball plungers 7 are connected to the inner tube 2 The plurality of through holes 12 arranged in a straight line in the circumferential direction are surely opened and closed by the elastic force of the spring c so that the bubble which is the gas ejected from the plurality of through holes 12 of the inner tube 2 From the viewpoint of being reliably cut by the plurality of balls 7a.

Hereinafter, the bubble generator of the eighth embodiment according to the present invention will be described in detail with reference to FIG.

The bubble generator of the eighth embodiment shown in Fig. 24 is different from the bubble generator of Fig. 24 only in that a plurality of ball plungers 7 of the sixth embodiment are provided instead of a plurality of balls 7a interposed between the inner tube 2 and the outer tube 3. [ 3, and the remaining configuration is the same as that of the third embodiment.

The base ends of the plurality of ball plungers (7) are fixed to the inner peripheral surface of the tip end portion of the outer tube (3).

The bubble generator of the eighth embodiment employing the plurality of ball plungers 7 as described above can operate in the same manner as the operation of the third embodiment. In particular, the plurality of balls 7a of the plurality of ball plungers 7, The plurality of through holes 12 arranged in a straight line in the circumferential direction of the inner tube 2 are reliably opened and closed by the elastic force of the spring c, From the viewpoint that the bubble, which is a gas ejected from the plurality of balls 7a, is reliably cut by the plurality of balls 7a.

Hereinafter, the bubble generator of the ninth embodiment according to the present invention will be described in detail with reference to FIG.

The bubble generator of the eighth embodiment shown in Fig. 25 differs from the bubble generator of Fig. 25 only in that a plurality of ball plungers 7 of the sixth embodiment are provided instead of a plurality of balls 7a interposed between the inner tube 2 and the outer tube 3. [ 4 and the remaining configuration is the same as that of the fourth embodiment.

The base ends of the plurality of ball plungers (7) are fixed to the inner peripheral surface of the tip end portion of the outer tube (3).

The bubble generator of the ninth embodiment employing the plurality of ball plungers 7 as described above can operate in the same manner as the operation of the fourth embodiment. In particular, the plurality of balls 7a of the plurality of ball plungers 7 can be operated, The plurality of through holes 12 arranged in a straight line in the circumferential direction of the inner tube 2 are reliably opened and closed by the elastic force of the spring c, From the viewpoint that the bubble, which is a gas ejected from the plurality of balls 7a, is reliably cut by the plurality of balls 7a.

In the eighth and ninth embodiments, the plurality of ball plungers 7 are described as being fixed to the outer tube 3 to open and close the through-hole 12 of the inner tube 2. However, A plurality of ball plungers 7 may be fixed to the inner tube 2 to open and close the through holes 13 of the outer tube 3. In this case, the plurality of ball plungers 7 The recess 6 may be formed on the inner circumferential surface of the outer tube 3 facing the inner tube 2. A plurality of through holes 13 spaced in the circumferential direction of the inner tube 2 may be formed in the recess 6. [ .

In the modification of the eighth and ninth embodiments, when a plurality of ball plungers 7 are fixed to the inner tube 2 to open and close the through hole 13 of the outer tube 3, the inner tube 2 The gas supply pipe 5 may be connected to the outer tube 3 in a state in which the through hole 12 is excluded from the distal end surface of the outer tube 3. The diameter of the plurality of through holes 13 In consideration of the water pressure according to the vertical direction.

In the third and fourth embodiments, when a plurality of elongated rollers 7b are interposed between the inner pipe 2 and the outer pipe 3 in the longitudinal direction of the inner pipe 2, as a tenth embodiment, 26, a plurality of elastic resilient pieces 77 for opening and closing the plurality of through holes 12 of the inner tube 2 may be fixed to the outer circumferential surface of the inner tube 2 so as to be pivotable, A plurality of outer elastic pieces 78 for opening and closing the plurality of through holes 13 of the outer tube 3 may be pivotally fixed to the inner peripheral surface of the outer tube 3. [

The structure for mounting the plurality of elastic resilient pieces 77 to the inner tube 2 is characterized in that a plurality of slot grooves 2a extending in the longitudinal direction are formed on the outer peripheral surface of the inner tube 2 in a circumferential direction And a plurality of ribs (77a) that can be fitted in the plurality of slot grooves (2a) in a heat sealing manner are formed on a radially inner surface of the plurality of ribbons When one end of the elastic resilient piece 77 is fixed and the tips of the plurality of elastic resilient pieces 77 are extended in one circumferential direction of the inner tube 2 and are pressed by the plurality of rollers 7b, If any one of the plurality of through holes 12 is blocked and is not pressed by the plurality of rollers 7b, the plurality of through holes 12 can be elastically restored so as to be radially inwardly spaced apart from each other Do.

The structure for mounting the plurality of outer elastic pieces 78 to the outer tube 3 is characterized in that a plurality of slot grooves 3a extending in the longitudinal direction are formed on the inner peripheral surface of the outer tube 3, And a plurality of bands (78a) that can be fitted to the plurality of slot grooves (3a) in a heat sealing manner are formed on a radially inner surface of the plurality of bands (78a) One end of each of the outer elastic pieces 78 is fixed and the tip ends of the plurality of outer elastic pieces 78 are extended in one circumferential direction of the outer tube 3 to be elastically deformed when pressed by the plurality of rollers 7b And is resiliently restored so as to be radially inwardly spaced apart from the plurality of through holes (13) unless the plurality of through holes (13) is blocked by the plurality of rollers (7b) It is possible.

When the bubble generator of the present invention is applied to a water treatment tank such as an aeration tank or the like having a large amount of foreign matter, the inner and outer elastic pieces 77 and 78 are arranged such that the plurality of rollers 7b, It is possible to surely close the plurality of through holes 12 and 13 by the plurality of rollers 7b so as to prevent intrusion of foreign matter, .

In the third to fourth embodiments, the plurality of through holes (12, 13) are provided in the state in which the plurality of rollers (7b) are interposed between the inner pipe (2) 10, both ends of the shaft 7c inscribed in the plurality of rollers 7b are positioned on both sides of the inner tube 2, regardless of whether the outer elastic pieces 77, 78 are applied or not, Shaped springs 75 and 75 so that the plurality of rollers 7b can be resiliently pressed by the ring-shaped springs 75 and 75. In addition,

As the inner tube 2 or the outer tube 3 rotates, the plurality of rollers 7b are rotated with the rotation or revolution so that the inner / outer elastic pieces 77 and 78 are continuously pressed The plurality of through holes 12 and the plurality of through holes 13 are successively closed and opened repeatedly to reliably cut the bubbles blown out through the through holes 12, Can supply.

In the tenth embodiment, a plurality of balls may be circumscribed on the plurality of axes 7c instead of the plurality of rollers.

In the third to fourth embodiments, the plurality of through holes (3b) are formed in the inner tube (2) with the plurality of rollers (7b) interposed between the inner tube (2) As shown in Fig. 27, irrespective of whether or not the outer elastic piece 78 is applied to the plurality of through holes 13 formed only in the outer tube 3, Both ends of the shaft 7c are fixedly or slidingly brought into contact with the outer circumferential surfaces of the ring-shaped springs 75 and 75 disposed on both sides of the inner tube 2, There is no plurality of through holes for elastically pressing the rollers 7b and supplying the gas from the inner tube 2 to the outer tube 3 so that the outer tube 3 is provided with the gas supply tube 5 It may be connected. At this time, the ring-shaped springs 75 and 75 elastically press the plurality of rollers 7b radially outward.

In the bubble generator of the eleventh embodiment constructed as described above, as the inner tube (2) or the outer tube (3) rotates, the plurality of rollers (7b) rotate with revolutions or revolutions and press the outer elastic piece The plurality of through holes 13 are successively closed and opened and repeated to cut the bubble blown out through the through hole 13, so that the fine bubble can be supplied to the water tank.

In the eleventh embodiment, instead of the plurality of rollers, a plurality of balls may be circumscribed on the plurality of shafts 7c.

In the tenth and eleventh embodiments, a plurality of ring-shaped springs 75 and 75 are described as elastically pressing both ends of the plurality of shafts 7c. However, the present invention is not limited to this, A plurality of springs may press each of the plurality of shafts 7c in the radial direction.

In the eighth to eleventh embodiments, a plurality of ball plungers 7, a plurality of balls 7a, a plurality of rollers 7b, or a plurality of balls 7b interposed between the inner pipe 2 and the outer pipe 3, 28, the plurality of through holes 12 of the inner tube 2 are formed as a pair of the inner and outer elastic pieces 77, 78. In the twelfth embodiment, A plurality of inner valve pieces 177 to be opened and closed may slidably contact the outer circumferential surface of the inner pipe 2 so as to be capable of pivoting resiliently and a plurality of outer pipes 17 for opening / The valve piece 178 may be slidably and elastically pivotally contacted with the inner circumferential surface of the outer tube 3. [

The structure for elastically slidingly contacting the plurality of inner valve pieces 177 with the outer circumferential surface of the inner pipe 2 is disposed between the inner pipe 2 and the outer pipe 3, The base end of one inner valve piece 177 extending in the longitudinal direction of the inner tube is fixed to each of the plurality of shafts 177a extending in the longitudinal direction of the outer tube 3 and fixed to the outer tube 3 and spaced apart from each other by a predetermined distance in the circumferential direction of the inner tube And the springs 175 and 175 fixed to both sides of the plurality of shafts 177a or the outer tube 3 push the plurality of inner valve pieces 177 toward the outer peripheral surface of the inner tube 2 So that the radially inner surface of the tip end of the plurality of inner valve pieces 177 has the same curvature as the outer circumferential surface curvature of the inner tube 2, (2), and the plurality The inner valve piece 177 is elastically contacted with the outer peripheral surface of the inner pipe 2 while the plurality of inner valve pieces 177 are opened and closed by the plurality of inner valve pieces 177.

The plurality of inner valve pieces 177 have a length in the longitudinal direction of the inner tube 2 capable of simultaneously opening and closing a plurality of through holes 12 arranged in the longitudinal direction of the inner tube 2.

The structure for slidably contacting the plurality of outer valve pieces 178 with the inner circumferential surface of the outer tube 3 is provided between the inner tube 2 and the outer tube 3, And the base end of one outer valve piece 178 extending in the longitudinal direction of the inner tube is rotatably mounted on each of the plurality of shafts 178a fixed to the inner tube 2 and spaced apart from each other by a predetermined distance in the circumferential direction of the inner tube. And the springs 175 and 175 fixed on both sides of the plurality of shafts 178a or the inner tube 2 push the plurality of outer valve pieces 178 toward the inner circumferential surface of the outer tube 3, So that the radially outer surface of the distal end of the plurality of outer valve pieces 178 has the same curvature as the inner circumferential surface curvature of the outer tube 3, ), And the plurality of The outer valve piece 178 is resiliently in sliding contact with the inner circumferential surface of the outer tube 3, and the plurality of through holes 13 are opened and closed by the plurality of outer valve pieces 178.

The plurality of outer valve pieces 178 have a length in the longitudinal direction of the outer tube 3 capable of simultaneously opening and closing a plurality of through holes 13 arranged in the longitudinal direction of the outer tube 3.

In the twelfth embodiment, the springs 175 and 175 are fixed to both sides of the plurality of shafts 177a and 178a or the inner tube 2 and the outer tube 3, and the plurality of inner / outer valve pieces 177 And 178 are rotatably circumscribed by the plurality of shafts 177a and 178a and the plurality of inner and outer valve pieces 177 and 178 are connected to the inner circumferential surface of the inner tube 2 and the outer circumferential surface of the outer tube 3, The spring 175 and 175 are in contact with both sides of the plurality of inner / outer valve pieces 177 and 178 so as to press the plurality of the inner and outer valve pieces 177 and 178 toward the inner and outer valve pieces 177 and 178. However, 178 are rotatably mounted on both sides of the shafts 177a, 178a or the inner tube 2 and the outer tube 3 and the base ends of the plurality of inner / outer valve pieces 177, 178 are connected to the axes 177a, 178a , And the plurality of inner / outer springs (175, 175) are fixedly mounted on both sides of the plurality of shafts (177a, 178a) It may be fixed to both the inner pipe 2 and the outer pipe 3 so as to press the outer valve pieces 177 and 178 toward the inner pipe 2 and the outer peripheral face of the outer pipe 3. [

At this time, the plurality of inner / outer valve pieces 177 and 178 may be separated into various parts so as to be spaced apart from each other along the longitudinal direction of the inner pipe so as to open / close the plurality of through holes 12 and 13.

The bubble generator of the twelfth embodiment configured as described above allows the inner / outer valve pieces 177 and 178 to be moved in the direction of the rotation of the inner tube 2 or the outer tube 3 by the plurality of through holes 12 and the plurality of through holes 13 are successively closed and opened and repeated to cut the bubble blown out through the through hole 12, so that the fine bubble can be supplied to the water tank.

The distal end of the inner valve piece 177 is in sliding contact with the outer circumferential surface of the inner tube 2 and the distal end of the outer valve piece 178 is in sliding contact with the inner circumferential surface of the outer tube 3 in the twelfth embodiment, However, the present invention is not limited to this, but an inner roller (not shown) that rotates with a rotation center parallel to the center axis of the inner tube is rotatably mounted on the tip of the inner valve piece 177, An outer roller (not shown) that rotates with a rotation center parallel to the center axis of the inner tube is rotatably mounted on the tip of the outer valve piece 178 so as to allow the inner roller to roll while moving the plurality of through holes 12 And cut the bubbles discharged through the plurality of through holes 12. The outer rollers cause the outer rollers to roll while crossing the plurality of through holes 13, And the bubbles discharged through the plurality of through holes (12) are cut off, so that fine bubbles can be formed.

In the third to fourth embodiments, when a plurality of balls 7a or a plurality of elongated rollers 7b in the longitudinal direction of the inner tube 2 are interposed between the inner tube 2 and the outer tube 3 29, a plurality of endoscope pieces 277 having a V-shaped cross-sectional shape for opening and closing a plurality of through-holes 12 of the inner tube 2 are inserted into the inner tube 2 (278) having a V-shaped cross-sectional shape for opening and closing the plurality of through holes (13) of the outer tube (3) is rotatably attached to the inner peripheral surface of the outer tube (3) Or may be pivotally secured.

The structure for mounting the plurality of endoscope pieces 277 to the inner tube 2 is configured to extend in the longitudinal direction of the inner tube between the inner tube 2 and the outer tube 3 and to be spaced apart in the circumferential direction of the inner tube 2 The intermediate portions of the plurality of endoscope pieces 277 are rotatably circumferentially circumferentially spaced in the longitudinal direction of the plurality of shafts 277a on both sides of a plurality of shafts 277a whose both ends are fixed to the inner tube 2, (277) extending in the longitudinal direction of the inner tube (277) is rotatably circumscribed, and when both end portions of the plurality of endoscope pieces (277) are in surface contact with the outer circumferential surface of the inner tube (2) A plurality of seat portions 203 are formed on the outer circumferential surface of the inner tube 2 facing the plurality of endoscope pieces 277 so as to prevent a step in the radial direction from the outer circumferential surface of the plurality of endoscope pieces 277, (7a) or a plurality of rolls (27b) so that the plurality of through holes (12) can be reliably closed when the plurality of through holes (12) are covered from the outside of the inner tube in the radial direction of the inner tube The protrusions 204 can be inserted into the plurality of through holes 12 on the inner side surface.

The structure for mounting the plurality of external fingers 278 on the outer tube 3 is configured to extend in the longitudinal direction of the inner tube between the inner tube 2 and the outer tube 3 and to be spaced apart in the circumferential direction of the inner tube 2 A plurality of axes 278a at both ends fixed to the outer tube 3 are rotatably externally brought into contact with an intermediate portion of the plurality of outer sheath pieces 278 at intervals in the longitudinal direction of the axes 278a, (278) extending in the lengthwise direction of the outer tubular member (278) is rotatably circumscribed, and when both end portions of the plurality of outer tubular pieces (278) are in surface contact with the inner circumferential surface of the outer tubular member (3) A plurality of seat portions 205 are formed on the inner circumferential surface of the outer tube 2 facing the plurality of outer female pieces 278 so as not to generate a step in the radial direction from the inner circumferential surface of the plurality of outer female pieces 278, (7a) or a plurality of rolls The plurality of through holes 13 can be reliably closed when the plurality of through holes 13 are pressed by the inner side surface 7b of the outer side plate 27 and cover the plurality of through holes 13 in the radial direction of the outer tube. And the protrusions 206 can be inserted into the through holes 13 and formed on the outer surface of the protrusions 206 in the direction of the arrows.

In the bubble generator of the thirteenth embodiment having the above-described structure, as the inner tube (2) or the outer tube (3) rotates, the plurality of balls (7a) or rollers (7b) rotate with revolutions or revolutions, And 278 are continuously pressurized and released from pressure so that the plurality of through holes 12 and the plurality of through holes 13 are successively closed and the opening and closing are repeated to cut the bubbles ejected through the through holes 12 , And fine bubbles can be supplied to the water tank.

In the first to thirteenth embodiments, a plurality of through holes are formed in the peripheral surface of the inner tube in the vertical direction, and a plurality of through holes are formed in the peripheral surface of the outer tube in the vertical direction. 30, the tip end of the inner pipe 2 is made to have a funnel-shaped cross section, and an inner pipe (not shown) positioned in the water of the water tank 1 in parallel with the water surface and facing the water surface A plurality of through holes 12 are formed in the distal end face 2a of the inner tube 2 and the outer disk plate 3 'is brought into slidable contact with the distal end face 2a of the inner tube, A plurality of through holes 13 facing the through holes 12 may be formed in the outer disk plate 3 '.

At this time, as shown in Fig. 30, the inner tube 2 may be a rotating body, and the outer disk plate 3 'may be fixed to the bottom of the water tank via the bracket 3a to become a fixed body. 31, the inner pipe 2 can be a fixed body, and the cylindrical outer gear 3 a is fixedly inserted into the outer disc plate 3 ' And the output gear 33 fixedly connected to the output shaft 32 of the motor M is engaged with the external gear 3a so that the outer disk plate 3 ' You may.

In the bubble generator of the fourteenth embodiment configured as described above, when the inner tube or the outer disk plate rotates, the plurality of through holes 12 formed in the end surface of the inner tube and the plurality of through holes 13 of the outer disk plate 3 ' And the bubbles discharged through the plurality of through holes 12 are cut off by the outer disk plate 3 'to become fine bubbles, Since the positions of the plurality of through holes 12 are positioned at the same depth, they have the same diameter.

In the fourteenth embodiment, the means for rotating the inner tube or rotating the outer disk plate is described as being disposed outside the water tank 1. However, the present invention is not limited to this, but may be arranged in water in the water tank.

32, the outer disk plate 3 'of the fourteenth embodiment is a fifteenth embodiment in which a plurality of blades 3 "extending in the radial direction of the inner tube and spaced apart in the circumferential direction of the inner tube, ). ≪ / RTI >

Wherein the plurality of blades 3 "are in sliding contact with the distal end face 2a of the inner tube 2 and one of the inner tube 2 and the plurality of blades 3" So that the plurality of blades 3 "serve to cut bubbles discharged through the plurality of through holes 12 of the inner tube 2. [

In the fourteenth embodiment, the distal end face 2a of the inner pipe 2 and the outer dichroic plate 3 'are in sliding contact contact with each other. In the sixteenth embodiment, as shown in Fig. 33, A plurality of through holes 12 formed in the distal end face 2a of the inner pipe 2 are passed across the distal end face 2a of the inner pipe 2, A plurality of balls 7a or rollers 7b may be interposed between the rollers 3 '.

Fig. 33 shows that a plurality of balls 7a are interposed between the distal end face 2a of the inner pipe 2 and the outer dikes 3 '.

In the sixteenth embodiment, since the distal end surface 2a of the inner tube 2 and the outer dichroic plate 3 'are spaced apart from each other, the bubbles are surely introduced into the outer disk plate 3' When the plurality of through holes 13 are formed in the outer disk plate 3 ', the through holes 13 and the through holes 12 may be opposed to each other, There is no need to deploy it.

When the through hole 13 is formed in the outer disk plate 3 ', the outer disk plate 3' is not fixed to the bracket 3a, and the outer surface of the outer disk plate 3 ' The outer tube 3 is selectively connected to the air or gas supply source and the through hole 12 is eliminated from the distal end surface 2a of the inner tube 2, Alternatively, the bubbles discharged through the plurality of through holes 13 formed in the outer disk plate 3 'may be cut by a roller.

The sixteenth embodiment is the same as the sixth to thirteenth embodiments except that the inner and outer elastic pieces 77 and 78, the inner and outer sheath pieces 277 and 278, the inner and outer valve pieces 177, 178 or a plurality of ball plungers 7 are interposed between the distal end surface 2a of the inner tube 2 and the outer sheath plate 3 ' The through holes 12 may be opened or closed.

The bubble generators of the first to the sixteenth embodiments can be applied to a dissolved oxygen supply system for supplying dissolved oxygen to an aquarium such as a sushi bar as shown in Fig. 34 as a seventeenth embodiment.

The dissolved oxygen supply system includes a dissolved oxygen water supply tank 81 having a bubble generator 80 on the bottom of any one of the first to sixteenth embodiments, a dissolved oxygen concentration sensor 80 for measuring the dissolved oxygen concentration in the seawater, A plurality of aquariums 82 provided with a sensor 83 and inhabited by aquatic organisms or aquatic organisms are connected to a lower portion of the plurality of aquariums 82 via an open / close valve, A circulation line 85 connected to the lower part of the dissolved oxygen water supply tank 81 via a filter 84 and an upstream end connected to the dissolved oxygen water tank 81 via a filter 86 and a water feed pump 87. [ And a water supply line 88 connected to an upper portion of the aquarium 82 via an open / close valve at a downstream end thereof.

The filter 86 is a mesh network having a hole capable of filtering or crushing a bubble of a predetermined diameter or more among the bubbles stored in the dissolved oxygen water supply tank 81 to be a bubble having a diameter smaller than the predetermined diameter .

The dissolved oxygen supply system configured as described above is configured to operate the bubble generator 80 to generate fine bubbles in the water stored in the dissolved oxygen water supply tank 81, When the dissolved oxygen concentration sensor 83 detects a dissolved oxygen concentration lower than the set dissolved oxygen concentration, the circulation pump 84 is operated to count the number of the aquariums 82 in the circulation line 85, The water supply pump 86 is operated to return the seawater of the dissolved oxygen water supply tank 81 to the one of the aquariums 82 to the water supply line 88 while returning the dissolved water to the dissolved oxygen water supply tank 81 via the water supply line 81. [ As shown in FIG.

  When the dissolved oxygen water is supplied to the aquarium 82 from the dissolved oxygen water supply tank 81, the fine bubbles contained in the water pass through the bubble crushing filter 86 and are crushed and dissolved in the seawater.

In the seventeenth embodiment, although the pump is described as being interposed between the water supply line and the circulation line, the present invention is not limited thereto, and if the height difference between the dissolved oxygen supply tank and the aquarium is set to be large, And if the dissolved oxygen water supply tank is of a closed type, the number of the aquarium is transferred to the dissolved oxygen water supply tank by the pump through only the circulation line, and the dissolved oxygen water supply tank is dissolved Oxygen water may be transferred to the aquarium by overflow.

The particle size of the bubble produced by the bubble generator of the above embodiments becomes smaller as the number of revolutions of the inner tube 2 increases and becomes larger as the number of revolutions of the inner tube 2 or the outer tube 3 decreases do.

In the above embodiments, the diameter of the through-hole 12 of the inner tube 2 is preferably smaller in the direction in which the gas passes, which is preferable from the viewpoint of reducing the diameter of the bubble ejected from the through-hole.

Further, in the above embodiments, the plurality of rollers 7b are arranged such that a plurality of cylindrical rollers extending in the axial direction are arranged in the circumferential direction of the inner tube and are rolling in the circumferential direction of the inner tube by the inner tube or the outer tube Although not shown in the drawings, the present invention is not limited to this, and as a modified embodiment, a plurality of shafts may be spaced in the circumferential direction of the inner tube between the inner tube and the outer tube so as to extend in the axial direction of the inner tube, (7b) may be fixedly or rotatably circumscribed in a state in which one of the plurality of rollers (7b) is not movable in the axial direction, with the both ends rotatably or fixedly mounted on the outer surface And the bubble generator of this modified embodiment is reliably designed by the plurality of rollers 7b It is preferable that the time difference across the through hole 12 or the through hole 13 can be set.

In this modification, instead of the cylindrical roller extending in the axial direction, a plurality of rollers having axial lengths smaller than the diameter of the main plate are spaced apart from each other in the axial direction so that they are not movable in the axial direction Or the plurality of balls 7a of the embodiments may be fixedly or rotatably circumscribed in a state in which they are not axially movable on each of the plurality of axes And both ends of the plurality of shafts may be fixedly or slidingly brought into contact with the inner circumferential surface of a ring-shaped spring disposed on both sides of the inner tube to elastically press the plurality of balls or rollers by the ring-shaped spring .

In the above embodiments, when the plurality of balls 7 or the rollers 7b interposed between the outer tube 3 and the inner tube 2 are rotatably coupled to the outer tube or the inner tube as a fixed chain, The present invention is not limited to this, and it is also possible that the outer tube 3 and the inner tube 2 are rotatable and rotatable, If the plurality of balls 7 or the rollers 7b interposed in the rotating body are fixedly coupled to the outer tube or the inner tube as the rotating body,

In the above embodiments, the inner pipe 2, the retainer 30, or the outer pipe 3 is described as a rotating body and the other is fixed. However, the present invention is not limited to this, One of the retainer 30 and the outer tube 3 may be a rotating body and the other may be a rotating body in the other direction. At this time, the inner tube 2 and the retainer 30 or the outer tube 3 Is driven by the first motor or the other is driven by the second motor or one of the inner tube 2 and the retainer 30 or the outer tube 3 is driven by the first motor The inner tube 2 and the retainer 30 or the outer tube 3 are rotated in opposite directions to each other, so that the inner tube 2 and the outer tube 3 are rotated in opposite directions, The relative speed between the inner tube 2 and the retainer 30 is made larger than in the embodiments The outer tube 3, or the retainer 30 at a rotational speed lower than the rotational speed of the inner tube 2, the outer tube 3, or the retainer 30 of the above-described embodiments, Can be generated.

Although the retainer or the outer tube is circumscribed in the inner tube in the above embodiments, the present invention is not limited thereto. As an alternative embodiment, the inner tube may be a rotator in a state in which the retainer or outer tube is excluded, (12) is formed on a circumferential surface of the through hole (12), and a base end is fixed adjacent to each of the plurality of through holes (12) And may include a plurality of blades that are not shown.

The bubble generator of the modified embodiment allows the bubble discharged into the water tub 1 through the plurality of through holes 12 of the inner tube 2 to be cut by the rotating plurality of blades, It is preferable from the viewpoint that fine bubbles can be formed only by rotation of the inner tube even in the state where the complicated retainer or the appearance is excluded.

When the bubble generator of the above embodiments is applied to a water treatment tank such as an aeration tank or the like having a large amount of foreign matter, the inner / outer elastic pieces 77 and 78, the inner / outer diaphragm pieces 277 and 278, A plurality of balls 7a or rollers 7b or a plurality of ball plungers 7 are arranged at positions where the plurality of through holes 12 and 13 can be closed at the time of stopping the operation of the bubble generator, It is possible to securely close the plurality of through holes 12 and 13, thereby making it possible to prevent intrusion of foreign matter.

In the above embodiments, the inner / outer elastic pieces 77 and 78, the inner / outer sheath pieces 277 and 278, the inner / outer valve pieces 177 and 178, A roller 7b or a plurality of ball plungers 7 is interposed between the inner tube 7a and the outer tube 7. However, the present invention is not limited to this, (12) of the inner tube (2) in a state where a plurality of through holes (12) of the inner tube (2) and a plurality of through holes (13) of the outer tube (3) The diameter may be increased from the vertical direction toward the bottom in consideration of the water pressure along the water depth.

Although the gas supply pipe is described as being connected to only the inner pipe in the above embodiment, the present invention is not limited to this, and the gas supply pipe may be connected to the outer pipe in a state in which the through pipe is formed only in the outer pipe, At this time, the diameter of the through-hole 13 of the outer appearance may be made larger as it goes down from the vertical direction in consideration of the water pressure along the water depth.

Although the gas supply pipe is described as being connected to the inner pipe or the outer pipe as the gas supply source in the above embodiments, the present invention is not limited to this, and a wing portion driven by a separate driving source, As the gas supply source, it can be disposed at any position such as the upstream end side of the inner pipe and the downstream end of the inner pipe. When the inner pipe rotates at high speed, the velocity head is increased in the inner pipe due to Bernoulli's theorem, Even if the inner pipe is vented to the atmosphere without being connected to the inner pipe, air in the atmosphere may be blown through the through hole of the inner pipe to supply bubbles to the water.

A configuration for driving the wing portion and a configuration in which the gas supply pipe is not connected to the inner pipe and the inner pipe is vented to the atmosphere is proposed in the patent application 10-2013-0152969 and 10-2013-0121529 Refer to the configuration.

Further, in the above embodiments, an unillustrated valve is provided in the inner pipe 2 through which the air flows, which is opened when the pressure formed by the vane portion is higher than the set pressure and is closed when the pressure is lower than the set pressure The valve is opened to allow air to flow out of the downstream end of the inner pipe 2 when the valve is higher than the set pressure if the valve is interposed in the opening formed separately at the closed end of the inner pipe 2 It is preferable in terms of being able to emit it.

Further, although in the above embodiments, the inner tube is described as being erected in the vertical direction through the bottom of the water tank, the present invention is not limited to this, but may be mounted on the bracket disposed on the water tank, The diameter of the plurality of through holes being equal to the diameter of the through holes existing at the same height among the plurality of through holes formed in the inner tube or the outer tube so that the inner tube is inclined in the water, Can be increased from the bottom to the bottom.

Although the gas supply pipe 5 is described as being connected to the base end of the inner pipe 2 in the above-described embodiments, the present invention is not limited to this and the gas supply pipe 5 may be inserted into the inner pipe 2, A plurality of gas supply through holes (not shown) may be formed in a region facing the through hole 12 of the inner pipe 2, and the diameters of the plurality of gas supply through holes .

The plurality of gas supply through holes may be a plurality of gas supply through holes spaced apart in the circumferential direction from the inner pipe 2 and extending in the vertical direction so as to face the plurality of through holes 12 of the inner pipe 2, The plurality of gas supply through holes having a plurality of quadratic equilateral triangles may be replaced by a plurality of gas supply through holes having a quadratic triangle shape, Respectively.

In the description of the above embodiments, the inner tube 2 is described as being disposed in water. However, the present invention is not limited to this, and it may be arranged in a liquid other than the water in which the fine bubble is required.

In the description of the above embodiments, a plurality of through holes arranged in a plurality of rows in the axial direction and a plurality of rows in the circumferential direction are formed in the inner tube 2 or the outer tube 3 in the axial direction and in the circumferential direction, 12, and 13 are formed on the inner tube 2. However, the present invention is not limited to this, and a plurality of through holes 12 may be formed on the inner tube 2 in a circumferential direction, A plurality of through holes 13 arranged in a circle in a single line spaced apart in the circumferential direction may be formed in the outer tube 3 or a plurality of through holes 13 may be formed in the inner tube 2 in a circumferential direction, Or a plurality of through holes 13 may be formed in the outer tube 3 in a circumferential direction and spaced apart from each other in an axial direction and arranged in a single oval shape .

At this time, the inner / outer elastic pieces 77 and 78, the inner / outer sheath pieces 277 and 278, the inner / outer valve pieces 177 and 178, the plurality of balls 7a, 7b, or a plurality of ball plungers 7 are arranged in one line in the circumferential direction of the inner tube or the outer tube.

One; Aquarium, 2; Inner tube, 3; Exterior

Claims (68)

A plurality of through holes 12 are formed in the liquid in a state of being vertically erected or inclined in the liquid in a clogged state and circumferentially and axially spaced from the circumferential surface of the tip, A possibly connected inner tube 2; And
And a plurality of retainers (30) circumscribed by a plurality of balls (7a) or a plurality of rollers (7b) at the distal end of the inner tube (2)
Wherein one of the inner tube (2) and the plurality of retainers (30) is a unidirectional rotating body and the other is a fixed body or another rotating body,
The plurality of retainers 30 have a ring shape so as to cover a plurality of through holes 12 arranged in the circumferential direction of the inner tube 2 and a plurality of retainers 30 arranged in the axial direction of the inner tube 2 Is disposed in each of the through holes in the axial direction so as to cover the through hole (12)
And the diameter of the plurality of through holes (12) is increased from the vertical direction toward the lower side. The method according to claim 1,
A plurality of ring-shaped concave portions 6 spaced in the axial direction of the inner tube 2 are formed on the outer peripheral surface of the distal end of the inner tube 2,
Each of the plurality of recesses (6) of the inner tube (2) is formed with the plurality of through holes (12) in the circumferential direction of the inner tube (2)
Wherein the plurality of balls (7a) are in contact with or spaced from each other in a circumferential direction with respect to the plurality of recesses (6). The method according to claim 1,
An elongated ring-shaped concave portion 6 is formed on the outer peripheral surface of the distal end portion of the inner tube 2 in the axial direction of the inner tube 2,
The concave portion (6) is formed with the plurality of through holes (12) in the circumferential direction and in the axial direction of the inner tube (2)
Characterized in that the plurality of rollers (7b) are in contact with the recess (6) in circumferential contact or spaced apart. The method according to claim 1,
A ring-shaped concave portion (6) is formed in each of the inner circumferential surfaces of the plurality of the retarders (30)
Wherein the plurality of balls (7a) are in contact with or spaced from each other in a circumferential direction with respect to the ring-shaped recess (6). A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced in the axial direction and in the circumferential direction,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or a plurality of rollers 7b are rotatably disposed between the distal end of the outer tube 3 and the distal end of the inner tube 2 so as to be rotatable or revolvable and rotatable,
The plurality of balls 7a or the rollers 7b may be provided in a plurality of through holes 12 of the inner pipe 2 or a plurality of through holes 12 of the outer pipe 3 at the time of rotation of the outer pipe 3 or the inner pipe 2. [ Passes through the through hole 13,
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. 6. The method of claim 5,
A plurality of ring-shaped concave portions 6 spaced in the axial direction of the inner tube 2 are formed on at least one of the inner circumferential surface of the distal end of the outer tube 3 and the outer circumferential surface of the distal end of the inner tube 2, 7a are in contact with or circumferentially in contact with the plurality of recesses 6,
An elongated ring-shaped recess 6 is formed in the axial direction of the inner tube 2 on at least one of the inner circumferential surface of the distal end of the outer tube 3 and the outer circumferential surface of the distal end of the inner tube 2, Wherein the bubble generator is seated in contact with the recessed portion (6) in a circumferential direction or spaced apart therefrom. The method according to claim 6,
Each of the plurality of recesses (6) of the inner tube (2) is provided with the plurality of through holes (12) spaced in the circumferential direction of the inner tube (2)
Wherein the plurality of through holes (12) are formed in the recessed portion (6) of the inner pipe (2) in the circumferential direction and in the axial direction of the inner pipe (2). 6. The method of claim 5,
The plurality of balls 7a or the plurality of rollers 7b are in contact with or spaced from each other in the circumferential direction of the inner tube 2,
The plurality of balls 7a or the plurality of rollers 7b are spaced apart from each other in the circumferential direction of the inner tube between the inner tube and the outer tube and extend in the axial direction of the inner tube so as to be rotatable or fixedly mounted And each of the plurality of rollers (7b) is fixedly or rotatably circumscribed, either fixedly or rotatably circumferentially spaced axially apart from each other. 6. The method of claim 5,
And the diameter of the through-hole of the inner tube (2) is made smaller in a direction through which the gas passes. 6. The method of claim 5,
A plurality of ring-shaped partition walls 71 rolling in a rolling contact with the plurality of balls 7a or the plurality of rollers 7b are spaced apart from each other in the axial direction of the inner tube 2 on the inner peripheral surface of the outer tube 3 Wherein the bubble generator comprises a bubble generator. 11. The method of claim 10,
Each of the inner circumferential surfaces of the plurality of partition wall portions 71 is provided with elastic members which are elastically retractable and resiliently inscribed in order to resiliently press the plurality of balls 7a or the rollers 7b radially inward Features bubble generator. 9. The method of claim 8,
Both ends of the plurality of shafts are fixed or slidingly contacted with the inner circumferential surface of the elastic member disposed on both sides of the inner tube 2 so that the plurality of balls 7a or the roller 7b are elastically pressed by the elastic member Wherein the bubble generator is a bubble generator. An inner tube (2) arranged in the liquid in the vertical direction or in an inclined state and provided with the external gear (21) on its outer surface;
An outer tube 3 circumscribed radially outwardly of the inner tube 21 and provided with an internal gear 31 on an inner peripheral surface thereof; And
A plurality of planetary gears (40) interposed between the external gear (21) and the internal gear (31) and meshing with the internal gears (31)
A plurality of through holes spaced apart in the axial direction of the external gear 21 are formed in at least one of a plurality of valleys of the external gear 21 and a plurality of valleys of the internal gear 31,
The inner tube (2) or the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
The outer tube (3) and the downstream end of the inner tube (2) are closed,
At least one of the outer tube (3) and the inner tube (2)
The plurality of planetary gears 40 are formed in the plurality of through holes 12 of the inner tube 2 or the plurality of through holes 13 of the outer tube 3 at the time of rotation of the outer tube 3 or the inner tube 2. [ ),
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. 14. The method of claim 13,
The plurality of planetary gears 40 are spaced apart in the axial direction and the circumferential direction of the inner tube 2 so that the protrusions of the plurality of planetary gears 40 are selectively opposed to the plurality of through holes 12 A plurality of planetary gears 40 arranged in a line in the axial direction of the inner pipe 2 are rotatably or fixedly mounted on an axis 41 disposed between the inner pipe 2 and the outer pipe 3, Lt; / RTI > direction, or < RTI ID = 0.0 >
In a state where the plurality of planetary gears (40) are spaced apart in the circumferential direction of the inner tube (2) so that the protrusions of the plurality of planetary gears (40) selectively face the plurality of through holes (12) Which is rotatably or fixedly and axially movable on a shaft 41 extending between the inner tube 2 and the outer tube 3 and extending over the entire length on the axial line of the shout gear 21 and the inner tube 2, Wherein the bubble generator is external to the bubble generator. 15. The method of claim 14,
The plurality of planetary gears (40)
When the inner tube 2 is rotated by the driving source while the outer tube 3 is fixed, the plurality of planetary gears 40 revolve and rotate,
A plurality of planetary gears 40 arranged in the circumferential direction of the inner tube 2 in a state in which the outer tube 3 is fixed are connected to a shaft 41 which is rotatably or rotatably inscribed together 42 are rotated by the drive source, the plurality of planetary gears 40 revolve and rotate,
When the outer tube 3 is rotated by the driving source in a state where the inner tube 2 is fixed, the plurality of planetary gears 40 revolve and rotate,
A plurality of planetary gears 40 arranged in the circumferential direction of the inner tube 2 in a state in which the inner tube 2 is fixed are connected to a shaft 41 which is rotatably or rotatably inscribed together 42 are rotated by the drive source, the plurality of planetary gears 40 revolve and rotate,
When the outer tube (3) or the inner tube (2) is rotated by the drive source in a state where the carrier (42) is fixed, the plurality of planetary gears (40)
Wherein the plurality of planetary gears (40) revolve and rotate as the inner tube (2) is rotated by the driving source in a state where the carrier (42) and the outer tube (3) are not fixed. A plurality of through holes (12) are formed in the circumferential surface of the inner tube (2) having the rotating body and the tip end clogged in the axial direction and in the circumferential direction,
The distal end portion of the inner tube (2) is arranged in a state of being vertically erected or inclined in the liquid,
The inner tube (2) is connected to a gas supply source or atmosphere so as to be flowable,
And a plurality of blades whose base ends are fixed adjacent to each of the plurality of through holes (12) and whose tips extend in a radially outward direction from each of the plurality of through holes (12)
And the diameter of the plurality of through holes (12) is increased from the vertical direction toward the lower side. A plurality of through holes 12 are formed in a vertically oriented state or an inclined state in the liquid and positioned in the liquid in parallel with the liquid surface to face the liquid surface so as to form a plurality of through holes 12, An inner pipe (2) circulatively connected to the atmosphere; And
And an outer disk plate (3 ') slidably contacting the distal end surface (2a) of the inner tube and formed with a plurality of through holes (13) facing each other in the vertical direction with the plurality of through holes (12)
Wherein one of the inner tube (2) and the outer disk plate (3 ') is a unidirectional rotating body and the other is a stationary body or another rotating body. 18. The method of claim 17,
Characterized in that the tip of the inner tube (2) has a funnel-shaped cross section. A plurality of through holes 12 are formed in a vertically oriented state or an inclined state in the liquid and positioned in the liquid in parallel to the liquid surface to face the liquid surface, An inner pipe (2) circulatively connected to the atmosphere; And
And a plurality of blades (3 ") slidably contacting the distal end face (2a) of the inner tube,
One of the inner tube 2 and the plurality of blades 3 "is a unidirectional rotating body and the other is a fixed body or another rotating body,
The plurality of blades 3 "extend in the radial direction of the inner tube 2 and are spaced apart from each other in the circumferential direction of the inner tube. The plurality of blades 3" Through the through-hole (12). An inner tube (2) arranged in a vertically oriented state or in a tilted state in the liquid and having a distal end face (2a) positioned in parallel with the liquid surface and facing the liquid surface; And
A bubble generator including an outer disk plate (3 ') spaced apart in a vertical direction with respect to a distal end surface (2a) of the inner tube,
One of the inner tube (2) and the outer disk plate (3 ') is a one-way rotating body and the other is a fixed body or another rotating body,
A plurality of through holes are formed in at least one of the front end surface 2a of the inner tube 2 and the outer disk plate 3 '
Either one of the inner tube (2) and the outer disk plate (3 ') is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or a plurality of rollers 7b are rotatably or revolvably and rotatably interposed between the outer end plate 2a and the outer disk plate 3 '
The plurality of balls 7a or the plurality of rollers 7b may be formed in a plurality of through holes 12 of the front end face 2a or a plurality of through holes 12b of the outer disk plate 3 ' (13). ≪ / RTI > 21. The method of claim 20,
And a plurality of through holes (13) are formed in the outer disk plate (3 '). A plurality of through holes (12) are formed on the circumferential surface of the tip portion, which is disposed in a vertically oriented state or a tilted state in the liquid in a state where the tip is clogged, in the axial direction and in the circumferential direction, A possibly connected inner tube 2; And
Wherein the bubble generator includes an outer tube (3) having a distal end clogged at its distal end on the distal end of the inner tube (2) and formed with a plurality of through holes (13) on the circumferential surface of the distal end,
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
The plurality of through holes (12) and the plurality of through holes (13) are arranged to face each other in the radial direction,
And the diameter of the plurality of through holes (12) is increased from the vertical direction toward the lower side. A plurality of through holes (12) are formed on the periphery of the tip portion in the axial direction and circumferentially spaced apart from each other in a state in which the tip is clogged in a vertical direction in a liquid state or in an inclined state, A possibly connected inner tube 2; And
A bubble generator comprising a plurality of retainers (30) circumscribed by a plurality of ball plungers (7) at the distal end of the inner tube (2)
Wherein one of the inner tube (2) and the plurality of retainers (30) is a unidirectional rotating body and the other is a fixed body or another rotating body,
The plurality of retainers 30 have a ring shape so as to cover a plurality of through holes 12 arranged in the circumferential direction of the inner tube 2 and a plurality of retainers 30 arranged in the axial direction of the inner tube 2 Is provided in each of the plurality of through holes (12) in the axial direction so as to cover the through hole (12)
The plurality of ball plungers (7) are fixed to the retainer (30) to open and close the plurality of through holes (12) with elasticity when the rotating body rotates,
And the diameter of the plurality of through holes (12) is increased from the vertical direction toward the lower side. 24. The method of claim 23,
The ball plunger (7)
A body (a) having a base end fixed to the retainer (30) and a tip end extending radially inward of the inner tube (2)
A bore (b) opened at the tip of the body (a) toward the inner tube (2)
The spring (c) and the spring
, And a ball (7a) inserted into the opening of the bore (b) so as to be able to protrude and retract. 25. The method of claim 24,
The ball plunger 7 is interposed between the spring c and the ball 7a to positively pressurize the ball 7a by the spring c, And a pressure plate (d) slidingly contacted with the bubble generator. 26. The method of claim 25,
The ball 7a is formed between the ball 7a and the pressure plate d so that the ball 7a can freely rotate in all directions including the circumferential direction of the inner tube from the opening of the bore b. Wherein a plurality of balls (f) having a diameter smaller than the diameter of the bobbin (7a) are interposed. 25. The method of claim 24,
A plurality of ring-shaped concave portions 6 spaced in the axial direction of the inner tube 2 are formed on the outer peripheral surface of the distal end of the inner tube 2,
Each of the plurality of recesses (6) of the inner tube (2) is formed with the plurality of through holes (12) in the circumferential direction of the inner tube (2)
Wherein the plurality of balls (7a) are seated on the plurality of recesses (6). 24. The method of claim 23,
And the diameter of the through hole (12) of the inner pipe (2) is made smaller in a direction in which the gas passes. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced in the axial direction and in the circumferential direction,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of ball plungers 7 are interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2,
The plurality of ball plungers 7 are fixed to the outer tube 3 or the inner tube so that the plurality of through holes 12 of the inner tube 2 or the plurality of through holes 12 of the outer tube 3 The through hole 13 is opened and closed with elasticity,
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. 30. The method of claim 29,
The ball plunger (7)
(A), (b) and (c), in which a base end is fixed to the outer tube (3) or the inner tube (2) and a tip thereof extends radially inwardly or outwardly of the inner tube
A bore (b) opened at the tip of the body (a) toward the inner tube (2)
The spring (c) and the spring
, And a ball (7a) inserted into the opening of the bore (b) so as to be able to protrude and retract. 31. The method of claim 30,
The ball plunger 7 is interposed between the spring c and the ball 7a to positively pressurize the ball 7a by the spring c, And a pressure plate (d) slidingly contacted with the bubble generator. 32. The method of claim 31,
The ball 7a is formed between the ball 7a and the pressure plate d so that the ball 7a can freely rotate in all directions including the circumferential direction of the inner tube from the opening of the bore b. Wherein a plurality of balls (f) having a diameter smaller than the diameter of the bobbin (7a) are interposed. 31. The method of claim 30,
A plurality of ring-shaped concave portions 6 spaced in the axial direction of the inner tube 2 are formed on the outer peripheral surface of the distal end portion of the inner tube 2 or the inner peripheral surface of the distal end portion of the outer tube 3, Is seated on the plurality of recesses (6)
Wherein each of the plurality of recesses (6) is formed with a plurality of through holes (12) or a plurality of through holes (13) in the circumferential direction of the inner tube (2). A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced in the axial direction and in the circumferential direction,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or rollers 7b are rotatably or revolvably and rotatably interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2,
A plurality of through holes 12 of the inner tube 2 are rotatably fixed on the outer circumferential surface of the inner tube 2 so as to be opened and closed by the plurality of balls 7a or the rollers 7b, A plurality of through holes 13 of the outer tube 3 and the outer tube 3 are rotatably fixed to the inner circumferential surface of the outer tube 3 for opening and closing by the plurality of balls 7a or the rollers 7b, And at least one of a plurality of outwardly resilient pieces (78)
Wherein a diameter of each of the plurality of through holes (12) or the plurality of through holes (13) is larger in a downward direction in the vertical direction. 35. The method of claim 34,
A plurality of slot grooves (2a) extending in the longitudinal direction are formed on the outer peripheral surface of the inner tube (2) so as to be spaced apart in the circumferential direction,
A plurality of elastic elastic pieces 73a are arranged on the radially inner side surfaces of the plurality of ribs 77a that can be fitted in the plurality of slot grooves 2a in a heat sealing manner with a space in the longitudinal direction of the plurality of ribs 77a, (77) is fixed,
Each of the ends of the plurality of resilient pieces 77 extends in one circumferential direction of the inner tube 2 and is elastically deformed when pressed by the plurality of rollers 7b so that any one of the plurality of through holes 12 Is resiliently resiliently spaced radially inwardly from the plurality of through holes (12) unless it is blocked by the plurality of rollers (7b)
A plurality of slot grooves 3a extending in the longitudinal direction are formed on the inner circumferential surface of the outer tube 3 in a circumferential direction,
A plurality of bosses (78a) that can be fitted in the plurality of slot grooves (3a) in a heat sealing manner are formed on a radially inner side surface of the plurality of bosses (78a) (78) is fixed,
Each of the ends of the plurality of outer elastic pieces 78 is extended in one circumferential direction of the outer tube 3 and is elastically deformed when pressed by the plurality of rollers 7b so that any one of the plurality of through holes 13 Is resiliently resiliently spaced radially inwardly from the plurality of through holes (13), if not blocked by the plurality of rollers (7b). 35. The method of claim 34,
The plurality of balls 7a or the rollers 7b are in contact with or spaced from each other in the circumferential direction of the inner tube 2,
The plurality of balls 7a or the rollers 7b are spaced in the circumferential direction of the inner tube between the inner tube and the outer tube and extend in the axial direction of the inner tube so that the plurality of balls 7a or the rollers 7b are rotatably or fixedly mounted on the inner tube or outer tube, Is fixedly or rotatably circumferentially spaced apart in the axial direction, or one of the plurality of rollers (7b) is fixedly or rotatably circumscribed. 37. The method of claim 36,
Wherein both ends of the plurality of shafts are fixed or slidingly contacted with elastic members disposed on both sides of the inner tube (2), and the roller (7b) is elastically pressed by the elastic member. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced in the axial direction and in the circumferential direction,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of inner valve pieces 177 slidably contacting with the outer circumferential surface of the inner tube 2 so as to be capable of pivoting to open and close the plurality of through holes 12 of the inner tube 2, And a plurality of outer valve pieces (178) elastically pivotally and slidably contacted to open and close the plurality of through holes (13) of the outer tube (3)
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. 39. The method of claim 38,
A plurality of shafts arranged between the inner tube 2 and the outer tube 3 and having opposite ends extending in the longitudinal direction of the inner tube 2 and fixed to the outer tube 3 and spaced apart from each other by a predetermined distance in the circumferential direction of the inner tube, One inner valve piece 177 extending in the lengthwise direction of the inner tube is rotatably circumscribed to each of the inner tube 177a,
An elastic member fixed to both sides of the plurality of shafts 177a or the outer tube 3 presses the plurality of inner valve pieces 177 to press the plurality of inner valve pieces 177 toward the outer peripheral surface of the inner tube 2. [ Respectively,
The plurality of inner valve pieces 177 are resiliently in sliding contact with the outer peripheral surface of the inner tube 2 so that the plurality of inner valve pieces 177 open and close the plurality of through holes 12,
The plurality of inner valve pieces 177 have a length in the longitudinal direction of the inner tube 2 capable of simultaneously opening and closing a plurality of through holes 12 parallel to the longitudinal direction of the inner tube 2,
A plurality of shafts arranged between the inner pipe 2 and the outer pipe 3 and having opposite ends extending in the longitudinal direction of the inner pipe 2 and fixed to the inner pipe 2 and spaced apart from each other by a predetermined distance in the circumferential direction of the inner pipe, The outer ends of one outer valve piece 178 extending in the longitudinal direction of the inner tube are rotatably circumscribed to each of the inner and outer flange portions 178a,
An elastic member fixed to both sides of the shaft 178a or the inner tube 2 presses the plurality of outer valve pieces 178 to press the plurality of outer valve pieces 178 toward the inner circumferential surface of the outer tube 3. [ Respectively,
The plurality of outer valve pieces 178 are resiliently in sliding contact with the inner peripheral surface of the outer tube 3 so that the plurality of outer valve pieces 178 open and close the plurality of through holes 13,
The plurality of outer valve pieces 178 have a length in the longitudinal direction of the outer tube 3 capable of simultaneously opening and closing a plurality of through holes 13 arranged in the longitudinal direction of the outer tube 3 Bubble generator. 39. The method of claim 38,
And both ends are disposed between the inner pipe 2 and the outer pipe 3 and both ends extend in the longitudinal direction of the inner pipe 2 and are rotatably mounted on the outer pipe 3 and are spaced apart from each other by a predetermined distance in the circumferential direction of the inner pipe A plurality of inner valve pieces 177 spaced in the longitudinal direction of the inner tube are fixedly circumscribed to each of the plurality of shafts 177a,
An elastic member fixed on both sides of the plurality of shafts 177a is mounted on both sides of the outer tube so as to press the plurality of inner valve pieces 177 toward the outer peripheral surface of the inner tube 2,
The plurality of inner valve pieces 177 are resiliently in sliding contact with the outer peripheral surface of the inner tube 2 so that the plurality of inner valve pieces 177 open and close the plurality of through holes 12,
A plurality of shafts arranged between the inner pipe 2 and the outer pipe 3 and having opposite ends extending in the longitudinal direction of the inner pipe 2 and fixed to the inner pipe 2 and spaced apart from each other by a predetermined distance in the circumferential direction of the inner pipe, A plurality of outer valve pieces 178 spaced apart in the longitudinal direction of the inner tube are fixedly circumscribed to the base portions 178a,
Elastic members fixed on both sides of the plurality of shafts 178a are mounted on both sides of the inner tube so as to press the plurality of outer valve pieces 178 toward the inner circumferential surface of the outer tube 3,
The plurality of outer valve pieces 178 are resiliently in sliding contact with the inner peripheral surface of the outer tube 3 so that the plurality of outer valve pieces 178 open and close the plurality of through holes 13 Bubble generator. 39. The method of claim 38,
An inner roller that rotates with a rotation center parallel to the center axis of the inner tube is rotatably mounted on the tip of the inner valve element 177,
Wherein an outer roller which is rotated with a rotation center parallel to the central axis of the inner tube is rotatably mounted on the tip of the outer valve piece (178). A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced in the axial direction and in the circumferential direction,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or a plurality of rollers 7b are interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2 so as to be rotatable or revolvable and rotatable,
A plurality of end pieces 277 which are pressed by the plurality of balls 7a or the plurality of rollers 7b to open and close the plurality of through holes 12 of the inner pipe 2 and the plurality of balls 7a, And a plurality of external fingers 278 that are pressed by the dog rollers 7b to open and close the plurality of through holes 13 of the outer tube 3,
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. 43. The method of claim 42,
Wherein the plurality of endoscope pieces (277) and the plurality of outer-end piece pieces (278) have a V-shaped cross-sectional shape. 44. The method of claim 43,
A plurality of shafts 277a extending in the longitudinal direction of the inner tube between the inner tube 2 and the outer tube 3 and spaced in the circumferential direction of the inner tube 2 and having both ends fixed to the inner tube 2, An intermediate portion of the plurality of endoscope pieces 277 is rotatably circumscribed or spaced apart in the longitudinal direction of the endoscope 277a or an intermediate portion of one endoscope piece 277 extending in the longitudinal direction of the inner tube is rotatably circumscribed,
The plurality of endoscope segments 277 and the plurality of endoscope segments 277 are arranged such that when the end portions of the plurality of endoscope segments 277 are in surface contact with the outer circumferential surface of the inner tube 2, A plurality of seat portions 203 are formed on the outer peripheral surface of the inner tube 2 facing each other,
Protrusions (204) which can be inserted and inserted into the plurality of through holes (12) are formed on the radially inner surface of one end of the plurality of endoscope pieces (277)
A plurality of shafts 278a extending in the longitudinal direction of the inner tube between the inner tube 2 and the outer tube 3 and spaced in the circumferential direction of the inner tube 2 and fixed to the outer tube 3 at both ends thereof, An intermediate portion of the plurality of outer sheath pieces 278 is rotatably circumscribed or spaced apart in the longitudinal direction of the inner sheath 278a or an intermediate portion of one outer sheath piece 278 extending in the longitudinal direction of the inner sheath is rotatably circumscribed,
The plurality of outer sheath pieces 278 and the plurality of outer sheath pieces 278 are formed so as to prevent a step in the radial direction from the inner peripheral surface of the outer tube 3 when both ends of the plurality of outer sheath pieces 278 are in surface contact with the inner surface of the outer tube 3. [ A plurality of sheet portions 205 are formed on the inner peripheral surface of the outer tube 2 facing each other,
And protrusions (206) that can be inserted and inserted into the plurality of through holes (13) are formed on a radially outer surface of one end of the plurality of external fingers (278). An inner tube (2) arranged in a vertically oriented state or in a tilted state in the liquid and having a distal end face (2a) positioned in parallel with the liquid surface and facing the liquid surface; And
A bubble generator including an outer disk plate (3 ') spaced apart in a vertical direction with respect to a distal end surface (2a) of the inner tube,
One of the inner tube (2) and the outer disk plate (3 ') is a one-way rotating body and the other is a fixed body or another rotating body,
A plurality of through holes are formed in at least one of the front end surface (2a) and the outer disk plate (3 '),
, Wherein either one of the front end surface (2a) and the outer disk plate (3 ') is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of ball plungers 7 are interposed between the distal end surface 2a of the inner tube and the outer disk plate 3 '
The plurality of ball plungers 7 are fixed to the outer disk plate 3 'or the front end surface 2a so that the plurality of ball plungers 7 are inserted into the plurality of through holes 12 of the inner tube 2, And the through hole (13) of the outer disk plate (3 ') is opened and closed with elasticity. An inner tube (2) arranged in a vertically oriented state or in a tilted state in the liquid and having a distal end face (2a) positioned in parallel with the liquid surface and facing the liquid surface; And
A bubble generator including an outer disk plate (3 ') spaced apart in a vertical direction with respect to a distal end surface (2a) of the inner tube,
One of the inner tube (2) and the outer disk plate (3 ') is a one-way rotating body and the other is a fixed body or another rotating body,
A plurality of through holes are formed in at least one of the front end surface 2a of the inner pipe and the outer disk plate 3 '
Either one of the front end surface 2a and the outer disk plate 3 'is connected to a gas supply source or atmosphere so as to be able to flow,
A plurality of balls 7a or rollers 7b are rotatably or revolvably and rotatably interposed between the distal end surface 2a of the inner tube and the outer disk plate 3 '
The distal end surface 2a of the inner tube 2 is opened so as to open and close the plurality of through holes 12 of the distal end surface 2a of the inner tube 2 by the plurality of balls 7a or the rollers 7b, A plurality of elastic resilient pieces 77 rotatably fixed to the outer surface of the outer disc plate 3 'and a plurality of through holes 13 of the outer disc plate 3' are opened / closed by the plurality of balls 7a or the rollers 7b , And a plurality of outer elastic pieces (78) pivotally secured to the inner surface of the outer disk plate (3 '). An inner tube (2) arranged in a vertically oriented state or in a tilted state in the liquid and having a distal end face (2a) positioned in parallel with the liquid surface and facing the liquid surface; And
A bubble generator including an outer disk plate (3 ') spaced apart in a vertical direction with respect to a distal end surface (2a) of the inner tube,
One of the inner tube (2) and the outer disk plate (3 ') is a one-way rotating body and the other is a fixed body or another rotating body,
A plurality of through holes are formed in at least one of the front end surface 2a of the inner pipe and the outer disk plate 3 '
, Wherein either one of the front end surface (2a) and the outer disk plate (3 ') is connected to a gas supply source or atmosphere so as to be flowable,
And a plurality of inner valve pieces (12) which are slidably in sliding contact with the outer surface of the front end surface (2a) of the inner pipe (2) so as to be capable of pivoting so as to open and close the plurality of through holes (12) And a plurality of outer valve pieces 178 that elastically pivotally and slidably contact with the inner surface of the outer disc plate 3 'to open and close the plurality of through holes 13 of the outer disc plate 3' A bubble generator for generating a bubble; 49. The method of claim 47,
Characterized in that the plurality of inner valve pieces (177) are mounted on the outer disk plate (3 ') and the plurality of outer valve pieces (178) are mounted on the inner tube (2). An inner tube (2) arranged in a vertically oriented state or in a tilted state in the liquid and having a distal end face (2a) positioned in parallel with the liquid surface and facing the liquid surface; And
A bubble generator including an outer disk plate (3 ') spaced apart in a vertical direction with respect to a distal end surface (2a) of the inner tube,
One of the inner tube (2) and the outer disk plate (3 ') is a one-way rotating body and the other is a fixed body or another rotating body,
A plurality of through holes are formed in at least one of the front end surface 2a of the inner pipe and the outer disk plate 3 '
Either one of the front end surface 2a and the outer disk plate 3 'is connected to a gas supply source or atmosphere so as to be able to flow,
A plurality of balls 7a or rollers 7b are rotatably or revolvably and rotatably interposed between the distal end surface 2a of the inner tube and the outer disk plate 3 '
A plurality of end pieces 277 which are pressed by the plurality of balls 7a or the plurality of rollers 7b to open and close the plurality of through holes 12 of the inner pipe 2 and the plurality of balls 7a, And a plurality of external fingers 278 that are pressed by the dog rollers 7b to open and close the plurality of through holes 13 of the outer disk plate 3 '. A plurality of through holes (12) are arranged in a circumferential direction on the periphery of the tip and are arranged in a circle and arranged in a circular shape, and the gas supply source An inner pipe (2) circulatively connected to the atmosphere; And
And a retainer (30) circumscribed by a plurality of balls (7a) or a plurality of rollers (7b) on the distal end of the inner tube (2)
One of the inner tube (2) and the retainer (30) is a unidirectional rotating body and the other is a fixed body or another rotating body,
Wherein the retainer (30) has a ring shape so as to cover the plurality of through holes (12). A plurality of through holes 12 are formed in a circumferential direction and spaced apart from each other in an axial direction and arranged in an elliptical shape on the periphery of the tip portion An inner tube (2) circulatively connected to a gas supply source or atmosphere; And
And a retainer (30) circumscribed by a plurality of balls (7a) or a plurality of rollers (7b) on the distal end of the inner tube (2)
One of the inner tube (2) and the retainer (30) is a unidirectional rotating body and the other is a fixed body or another rotating body,
The retainer (30) has a ring shape to cover the plurality of through holes (12)
And the diameter of the plurality of through holes (12) is increased from the vertical direction toward the lower side. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced apart in the circumferential direction and arranged in a circle,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or a plurality of rollers 7b are rotatably disposed between the distal end of the outer tube 3 and the distal end of the inner tube 2 so as to be rotatable or revolvable and rotatable,
The plurality of balls 7a or the rollers 7b may be provided in a plurality of through holes 12 of the inner pipe 2 or a plurality of through holes 12 of the outer pipe 3 at the time of rotation of the outer pipe 3 or the inner pipe 2. [ Through the through hole (13). A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner peripheral surface of the inner tube (2) and the outer peripheral surface of the outer tube (3) is formed with a plurality of through holes spaced in the circumferential direction and spaced apart in the axial direction and arranged in an elliptical shape,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or a plurality of rollers 7b are rotatably disposed between the distal end of the outer tube 3 and the distal end of the inner tube 2 so as to be rotatable or revolvable and rotatable,
The plurality of balls 7a or the rollers 7b may be provided in a plurality of through holes 12 of the inner pipe 2 or a plurality of through holes 12 of the outer pipe 3 at the time of rotation of the outer pipe 3 or the inner pipe 2. [ Passes through the through hole 13,
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. An inner tube (2) arranged in the liquid in the vertical direction or in an inclined state and provided with the external gear (21) on its outer surface;
An outer tube 3 circumscribed radially outwardly of the inner tube 21 and provided with an internal gear 31 on an inner peripheral surface thereof; And
A plurality of planetary gears (40) interposed between the external gear (21) and the internal gear (31) and meshing with the internal gears (31)
A plurality of through holes spaced circumferentially are formed in at least one of a plurality of valleys of the external gear 21 and a plurality of valleys of the internal gear 31,
The inner tube (2) or the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
The outer tube (3) and the downstream end of the inner tube (2) are closed,
At least one of the outer tube (3) and the inner tube (2)
The plurality of planetary gears 40 are formed in the plurality of through holes 12 of the inner tube 2 or the plurality of through holes 13 of the outer tube 3 at the time of rotation of the outer tube 3 or the inner tube 2. [ ) Of the bubble generator. A plurality of through holes (12) are formed in the circumferential surface of the inner tube (2) having a rotating end and closed at the tip,
The distal end portion of the inner tube (2) is arranged in a state of being vertically erected or inclined in the liquid,
The inner tube (2) is connected to a gas supply source or atmosphere so as to be flowable,
And a base end fixed to each of the plurality of through holes (12), the tip including a plurality of blades extending radially outward from each of the plurality of through holes (12). A plurality of through holes (12) are arranged in a circle in a circumferential direction and arranged in a circular shape on a circumferential surface of the tip portion which is arranged in a vertically oriented state or a tilted state in the liquid in a state where the tips are clogged, An inner tube 2 connected to the inner tube 2 so as to be flowable; And
Wherein the bubble generator includes an outer tube (3) having a distal end clogged at its distal end on the distal end of the inner tube (2) and formed with a plurality of through holes (13) on the circumferential surface of the distal end,
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
Wherein the plurality of through holes (12) and the plurality of through holes (13) are arranged to face each other in the radial direction. A plurality of through holes 12 are formed in a circumferential direction and spaced apart in the axial direction and arranged in an elliptical shape on the circumferential surface of the distal end portion, An inner tube (2) circulatively connected to a gas supply source or atmosphere; And
Wherein the bubble generator includes an outer tube (3) having a distal end clogged at its distal end on the distal end of the inner tube (2) and formed with a plurality of through holes (13) on the circumferential surface of the distal end,
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
The plurality of through holes (12) and the plurality of through holes (13) are arranged to face each other in the radial direction,
And the diameter of the plurality of through holes (12) is increased from the vertical direction toward the lower side. A plurality of through holes (12) are arranged in a circumferential direction on the periphery of the tip, and are arranged in a circular shape and arranged in a circular shape in a state in which the tips are clogged in a vertical direction in the liquid, An inner tube 2 connected to the inner tube 2 so as to be flowable; And
And a retainer (30) circumscribed by a plurality of ball plungers (7) at the distal end of the inner tube (2)
One of the inner tube (2) and the retainer (30) is a unidirectional rotating body and the other is a fixed body or another rotating body,
The retainer (30) has a ring shape so as to cover a plurality of through holes (12) arranged in the circumferential direction of the inner tube (2)
Wherein the plurality of ball plungers (7) are fixed to the retainer (30), and when the rotating body rotates, the plurality of through holes (12) are opened and closed with elasticity. A plurality of through holes (12) are arranged in a circumferential direction and spaced apart from each other in an axial direction and arranged in an elliptical shape in a circumferential direction on the periphery of the tip, An inner tube (2) circulatively connected to a gas supply source or atmosphere; And
And a retainer (30) circumscribed by a plurality of ball plungers (7) at the distal end of the inner tube (2)
One of the inner tube (2) and the retainer (30) is a unidirectional rotating body and the other is a fixed body or another rotating body,
The retainer (30) has a ring shape so as to cover a plurality of through holes (12) arranged in the circumferential direction of the inner tube (2)
The plurality of ball plungers (7) are fixed to the retainer (30) to open and close the plurality of through holes (12) with elasticity when the rotating body rotates,
And the diameter of the plurality of through holes (12) is increased from the vertical direction toward the lower side. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) has a plurality of through holes spaced circumferentially and formed in a single row,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of ball plungers 7 are interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2,
The plurality of ball plungers 7 are fixed to the outer tube 3 or the inner tube so that the plurality of through holes 12 of the inner tube 2 or the plurality of through holes 12 of the outer tube 3 And the through hole (13) is opened and closed with elasticity. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner peripheral surface of the inner tube (2) and the outer peripheral surface of the outer tube (3) is formed with a plurality of through holes spaced in the circumferential direction and spaced apart in the axial direction and arranged in an elliptical shape,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of ball plungers 7 are interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2,
The plurality of ball plungers 7 are fixed to the outer tube 3 or the inner tube so that the plurality of through holes 12 of the inner tube 2 or the plurality of through holes 12 of the outer tube 3 The through hole 13 is opened and closed with elasticity,
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced apart in the circumferential direction and arranged in a circle,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or rollers 7b are rotatably or revolvably and rotatably interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2,
A plurality of through holes 12 of the inner tube 2 are rotatably fixed on the outer circumferential surface of the inner tube 2 so as to be opened and closed by the plurality of balls 7a or the rollers 7b, A plurality of through holes 13 of the outer tube 3 and the outer tube 3 are rotatably fixed to the inner circumferential surface of the outer tube 3 for opening and closing by the plurality of balls 7a or the rollers 7b, Wherein the bubble generator comprises at least one of a plurality of elastomeric pieces (78). A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner peripheral surface of the inner tube (2) and the outer peripheral surface of the outer tube (3) is formed with a plurality of through holes spaced in the circumferential direction and spaced apart in the axial direction and arranged in an elliptical shape,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or rollers 7b are rotatably or revolvably and rotatably interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2,
A plurality of through holes 12 of the inner tube 2 are rotatably fixed on the outer circumferential surface of the inner tube 2 so as to be opened and closed by the plurality of balls 7a or the rollers 7b, A plurality of through holes 13 of the outer tube 3 and the outer tube 3 are rotatably fixed to the inner circumferential surface of the outer tube 3 for opening and closing by the plurality of balls 7a or the rollers 7b, And at least one of a plurality of outwardly resilient pieces (78)
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced apart in the circumferential direction and arranged in a circle,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of inner valve pieces 177 slidably contacting with the outer circumferential surface of the inner tube 2 so as to be capable of pivoting to open and close the plurality of through holes 12 of the inner tube 2, And a plurality of outer valve pieces (178) which elastically pivotally slidably contact and open and close the plurality of through holes (13) of the outer tube (3). A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner peripheral surface of the inner tube (2) and the outer peripheral surface of the outer tube (3) is formed with a plurality of through holes spaced in the circumferential direction and spaced apart in the axial direction and arranged in an elliptical shape,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of inner valve pieces 177 slidably contacting with the outer circumferential surface of the inner tube 2 so as to be capable of pivoting to open and close the plurality of through holes 12 of the inner tube 2, And a plurality of outer valve pieces (178) elastically pivotally and slidably contacted to open and close the plurality of through holes (13) of the outer tube (3)
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner circumferential surfaces of the inner tube (2) and the outer tube (3) is formed with a plurality of through holes spaced apart in the circumferential direction and arranged in a circle,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or a plurality of rollers 7b are interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2 so as to be rotatable or revolvable and rotatable,
A plurality of end pieces 277 which are pressed by the plurality of balls 7a or the plurality of rollers 7b to open and close the plurality of through holes 12 of the inner pipe 2 and the plurality of balls 7a, And a plurality of external fingers (278) which are pressed by the dog rollers (7b) to open and close the plurality of through holes (13) of the outer tube (3). A bubble generator including an inner tube (2) arranged in a vertically oriented state or in a tilted state in a liquid in a state in which the tip is clogged, and an outer tube (3) whose outer end is circumscribed at the tip of the inner tube (2)
One of the inner pipe (2) and the outer pipe (3) is a unidirectional rotating body and the other is a fixed body or another rotating body,
At least one of the inner peripheral surface of the inner tube (2) and the outer peripheral surface of the outer tube (3) is formed with a plurality of through holes spaced in the circumferential direction and spaced apart in the axial direction and arranged in an elliptical shape,
Wherein either one of the inner tube (2) and the outer tube (3) is connected to a gas supply source or atmosphere so as to be flowable,
A plurality of balls 7a or a plurality of rollers 7b are interposed between the distal end of the outer tube 3 and the distal end of the inner tube 2 so as to be rotatable or revolvable and rotatable,
A plurality of end pieces 277 which are pressed by the plurality of balls 7a or the plurality of rollers 7b to open and close the plurality of through holes 12 of the inner pipe 2 and the plurality of balls 7a, And a plurality of external fingers 278 that are pressed by the dog rollers 7b to open and close the plurality of through holes 13 of the outer tube 3,
And the diameters of the plurality of through holes (12) or the plurality of through holes (13) are increased from the vertical direction toward the bottom. 67. A dissolved oxygen supply system for bubble bubbles according to any one of claims 1 to 67,
A dissolved oxygen water supply tank 81 having the bubble generator 80,
A plurality of aquariums 82 having a dissolved oxygen concentration sensor 83 for measuring the concentration of dissolved oxygen in the water, in which aquatic organisms or aquatic organisms are inhabited,
A circulation line 85 whose upstream end is connected to a lower portion of the aquarium tubes 82 via an on-off valve and whose downstream end is connected to the lower portion of the dissolved oxygen water supply tank 81,
A water supply line 88 connected at the upstream end to the upper portion of the dissolved oxygen water tank 81 via a filter 86 and connected at the downstream end to an upper portion of the plurality of aquarium tubes 82 via an on- Lt; / RTI >
A pump is interposed in at least one of the water supply line (88) and the circulation line (85)
The filter 86 is a mesh network having a hole capable of filtering or crushing a bubble of a predetermined diameter or more among the bubbles stored in the dissolved oxygen water supply tank 81 to be a bubble having a diameter smaller than the predetermined diameter The dissolved oxygen supply system comprising:

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