KR20100123931A - Micro bubble generator - Google Patents

Abstract

PURPOSE: A micro bubble generator is provided to make rapid flow of water by air to induce eddy flow of water mixed with micro bubbles while making micro bubbles, thereby increasing the mixing force between the water and the micro bubbles. CONSTITUTION: Guide members(132a,132b) are formed in a spiral structure. A bubble generating assembly(131) includes contact members(133). The contact members are horizontally installed in the guide member. Protrusions(134) are formed at a fixed interval in a length direction. Eddy flow is made while air and dirty water pass the guide member by an air lift effect. Micro bubbles are made by crushing the air.

Description

Micro Bubble Generator

The present invention relates to a microbubble generating device, and more particularly, to generate a microbubble in the sewage treatment system to purify using aerobic bacteria for the purification of the dirty water or sludge water drained with mineral oil or vegetable oil, etc. The present invention relates to a fine bubble generator for supplying and mixing sewage.

Generally, in purifying water soiled with mineral oil or vegetable oil in a factory using water, aerobic bacteria or the like is acted on the soiled water in the septic tank, and the aerobic bacteria and the like are propagated in the septic tank to digest the dirty components. The treatment method is widely used.

In the apparatus for performing such sewage treatment, it is required to prepare a living environment such as aerobic bacteria by mixing microbubbles in the sewage to promote oxygen breathing to breed aerobic bacteria.

Conventional devices for mixing or generating fine bubbles in the sewage as described above is a circular pipe disposed in the sewage to be purified, an air outlet installed at the lower end of the pipe and connected to an air supply source to supply air into the pipe; And vortex forming means such as spiral wings installed in the pipe.

That is, in the conventional bubble mixing device or bubble generating device, the air discharged from the air outlet port passes through the spiral wing together with the sewage in the pipe, and vortices are generated upward. Bubbles are mixed in the water stream. At the same time, by arranging the bubble micronizing means having a plurality of projections in the pipe, it is possible to refine the bubbles to promote the purification of sewage.

As described above, in the conventional bubble mixing apparatus or the bubble generating apparatus, the stirring of the water flow is promoted by forming the vortex water stream over a long period of time, and the generation and mixing of bubbles in the sewage are promoted.

Moreover, in the conventional bubble mixing apparatus or bubble generating apparatus for the purification of filthy water, etc., the method of colliding air (bubble) in the water stream with the projection and thereby miniaturizing the bubble is generally used. It has been found that the generation of cavitation and the collapse of bubbles due to changes in water pressure can purify sewage more efficiently.

In order to generate cavitation or the like in the sewage, it is necessary not to generate vortex water flow or to disperse the water flow in the cylinder or pipe, but to accelerate the water flow and cause a pressure change in the water flow.

From this point of view, it is true that only forming a vortex water flow in the conventional bubble mixing device or bubble generating device has a limit in effectively promoting the generation of bubbles in the sewage and the like and purifying the sewage efficiently.

Accordingly, the present invention has been invented in consideration of the above-mentioned points, and induces a rapid flow of water (sewage) by blowing air and crushing the air to generate fine bubbles and at the same time induce the generation of vortex of water mixed with the fine bubbles. By doing so, it is possible to increase the stirring power and oxygen dissolution efficiency of the fine bubbles and filthy water, and to disperse the filthy water mixed with the fine bubbles evenly throughout the septic tank, and thus to effectively increase the amount of dissolved oxygen and purification efficiency in the septic tank. The object is to provide a bubble generating device.

In order to achieve the above object, the present invention provides an air blowing tube which is inserted into the outer cylinder and connected to an air supply source and blows air upward through an outlet end in the outer cylinder; It is installed to the upper side of the air blowing pipe in the inside of the outer cylinder and comprises a fine bubble generating means for generating fine bubbles while the air discharged from the outlet end of the air blowing pipe passes along with the sewage,

The microbubble generating means is formed in a helical structure, the guide member is formed to extend vertically in the interior of the outer cylinder, and fixedly installed in the transverse direction in the inner side of the guide member is formed repeatedly at a predetermined interval along the longitudinal direction Bubble generation assembly including a contact member is configured to be fixed to the inside of the outer cylinder through the support,

Inside the outer cylinder, the air and the filth come into contact with the guide member, the contact member and the projection while passing through the inside and the outside of the guide member by the airlift effect, and the air bubbles form the vortex of the filthy water and the fine bubbles by air pulverization. It provides a fine bubble generator, characterized in that the generation is made.

Here, the bubble generating assembly is characterized in that the contact member is formed in a structure in which the contact member is connected to each other and integrated in a spiral structure.

In addition, the two guide members are each formed of a plate-shaped length member of a spiral structure is disposed inside the outer cylinder, and the two guide members are fixed by the contact members in a superimposed state so that the two guide members are alternately arranged. It is characterized by.

In addition, the contact members are formed as a rod-shaped length member is connected between the two guide members in the transverse direction from the inside, the contact members are characterized in that the structure is arranged up and down along the two guide members .

In addition, the contact members are disposed long in the radial direction passing through the center of the cylindrical shape formed by the two guide members, the contact members stacked up and down in a sequentially twisted by a predetermined angle (α) so that the spiral arrangement It is characterized in that the arrangement.

In addition, the fine bubble generating means is characterized in that it is configured by installing a plurality of bubble generating assembly side by side inside the outer cylinder.

Here, the bubble generating assembly is characterized in that the one end of the contact member is fixed to the inside of the guide member formed in a spiral structure.

In addition, the guide member is formed of a plate-shaped length member of the spiral structure is disposed inside the outer cylinder, the contact members are formed as a rod-shaped length member is characterized in that arranged up and down along the guide member .

In addition, the contact members are disposed long in the radial direction passing through the center of the cylindrical shape formed by the guide member, the contact members stacked up and down are arranged in a long twisted direction by a predetermined angle in order to form a spiral arrangement It is done.

In addition, the outer peripheral surface of the guide member is characterized in that the outer protrusions are formed to protrude so as to extend in the axial direction of the contact member.

In addition, the surface of the outer projection is characterized in that the notch for promoting the generation of bubbles is formed long along the axial direction.

In addition, the protrusions of a predetermined length are formed long on the surface of the contact member, characterized in that the notch for promoting the generation of bubbles on the surface of each of the protrusions is formed long along the axial direction.

In addition, the microbubble generating device, characterized in that the notch for promoting the generation of bubbles on the surface of each of the projections are formed long along the axial direction.

In addition, the support portion is made of a plate-like hole formed in the center so that air and sewage can pass through, the end of the guide member is fixed to the upper surface in the state that the peripheral portion is fixed to the inner surface of the outer cylinder to fix the bubble generating assembly It features.

In addition, a conical membrane member is installed at the upper end of the outer cylinder to be the outlet of the outer cylinder.

Accordingly, in the microbubble generating device of the present invention, the air is blown to generate a rapid flow of water (sewage), the air is crushed finely to generate microbubbles, and at the same time inducing the generation of vortex of water mixed with the microbubbles, The agitation power of the sewage and the dissolution efficiency of oxygen can be increased, and the sewage mixed with the fine bubbles can be evenly dispersed throughout the septic tank, which in turn has the advantage of effectively increasing the dissolved oxygen amount and purification efficiency in the septic tank.

In particular, by drawing water in the lower part of the outer cylinder to generate a circulation flow and improve the circulation of fine bubbles and water, oxygen can be evenly distributed throughout the septic tank, and corners in the septic tank, which are easy to be biased to anaerobic conditions, are also aerobic conditions. Can be maintained.

In addition, sludge and the like can be minimized to be deposited on the bottom of the septic tank, and conventional problems such as the obstruction of the diffuser can be solved (no separate maintenance is required).

Hereinafter, the features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. The terms or words used in the present specification and claims are consistent with the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It should be interpreted as meaning and concept.

The present invention relates to a microbubble generating device that can be used in a sewage treatment system for purifying by using aerobic bacteria for the purification of the dirty water or sludge water with mineral oil or vegetable oil.

The effective aerobic treatment (aerobic biotreatment) of sewage in septic tanks (or aeration tanks) in sewage treatment systems requires high dissolved oxygen throughout the septic tanks.

In other words, when the aerobic treatment is to be carried out, it is important to make the entire septic tank into an aerobic state. In this case, it is necessary to generate micro bubbles to mix the sewage with the septic tank evenly. In addition, even if microbubbles are generated, if the microbubbles are not widely spread throughout the septic tank, there is no meaning such as to greatly reduce the purification efficiency. In particular, low dissolved oxygen and sludge are easily deposited at the bottom of the septic tank. This causes problems such as the closure of the diffuser, which in turn requires maintenance.

Therefore, it is necessary to use an efficient bubble generator that generates air as a kind of diffuser that supplies air to sewage, cuts and pulverizes it to generate fine bubbles and evenly mixes the sewage.

The bubble generator of the present invention generates a rapid flow of water (sewage) by blowing air, and finely breaks the air to generate fine bubbles, and at the same time induces the vortex generation of water mixed with the fine bubbles, the stirring force of the fine bubbles and sewage And it is possible to increase the dissolution efficiency of oxygen, to evenly disperse the sewage mixed with fine bubbles throughout the septic tank, it is configured to effectively increase the dissolved oxygen amount and purification efficiency in the septic tank.

Hereinafter, the bubble generator of the present invention as described above will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a bubble generating apparatus according to the present invention, the bubble generating device is a view showing an example installed in the septic tank with the air blowing pipe assembled. In addition, Figure 2a and 2b is a perspective view of the bubble generating apparatus according to the present invention, Figure 2a is a plan perspective view, Figure 2b is a bottom perspective view, Figure 3 is a cross-sectional view taken along the line 'A-A' in Figure 1 to be.

In addition, Figure 4 is a front view showing a fine bubble generating means in the bubble generating apparatus according to the present invention, Figure 5 is a perspective view showing a fine bubble generating means in the bubble generating apparatus according to the present invention, which is disposed inside the outer cylinder It is a perspective view showing only the fine bubble generating means is shown, showing the arrangement of the contact member assembled to the guide member well. 6 is a plan view schematically showing the arrangement direction of the contact member in the bubble generating apparatus according to the present invention.

As shown, the lower end of the bubble generating device 100 is connected to the air blowing pipe 120 connected to a known air supply source, such as a blower blower (blower) is installed, the air blowing in the bubble generating device 100 The fine bubble generating means 130 is disposed above the outlet end 121 of the pipe 120.

At this time, the air blowing pipe 120 is inserted into the lower end of the outer cylinder 110 into which the fine bubble generating means 130 is inserted in the bubble generating device 100, and the outlet end 121 of the air blowing pipe 120 is installed. ) Is installed to face upward in the outer cylinder 110, so that the air blown out through the outlet end 121 is supplied upward from the inside of the outer cylinder (110).

In addition, the fine bubble generating means 130 is located above the outlet end 121 of the air blowing pipe 120 so that the air ejected through the air blowing pipe 120 passes through the fine bubble generating means 130 on the upper side. Is placed.

In addition, the bubble generator 100 is installed to be immersed in the sewage in the septic tank (or aeration tank, water treatment tank) 1, wherein the bubble generator 100 is to be fixed in the septic tank 1 by the fixture 122. Can be.

For example, as shown in the figure, by installing a fixture 122 in the air blowing pipe 120 inserted into the outer cylinder 110 and fixing the fixture 122 to the bottom surface of the septic tank 1 by the bubble generator 100 You can fix the whole.

On the other hand, in the bubble generating device 100, the outer cylinder 110 is a component constituting the outer periphery of the device, a cylindrical tube of a predetermined diameter can be used, the generation of vortex of sewage in the interior of the outer cylinder 110 is vertically long The microbubble generating means 130 which generates microbubbles while inducing and mixes them in the vortex is arranged.

The microbubble generating means 130 immersed in the water in the bubble generating device 100 of the present invention is supplied with the air ejected from the air blowing pipe 120 to cut and pulverize it to generate fine bubbles, and also the gas liquid ( Iii) configured to generate spiral water flow, ie vortices, to effectively increase contact efficiency.

4 and 5 are perspective views showing the configuration of the bubble generating means, as shown, the bubble generating means 130 is a plurality of guide members (132a, 132b) of a spiral structure and the plurality of guide members (132a) While integrating and integrating the 132b, the bubble generating assembly 131 including the contact member 133 having a plurality of protrusions 134 formed along the longitudinal direction is fixed to the inside of the outer cylinder 110. .

In more detail, the guide members 132a and 132b are manufactured by processing a plate-shaped length member having a predetermined thickness and length in a helical shape, and are placed in the outer cylinder 110 so as to be disposed in a vertical direction and arranged in a spiral manner. In this case, the plurality of guide members 132a and 132b are assembled by being stacked to be alternately arranged.

For example, the two guide members 132a and 132b may be assembled while being alternately arranged with each other so as to be spaced apart at predetermined intervals. The two guide members 132a and 132b are integrated into one structure by the contact members 133 connecting between the two guide members 132a and 132b.

4 and 5, the helical guide member 132a is disposed between the helical guide member 132b so that the two guide members 132a and 132b are alternately arranged to alternately repeat. At this time, it can be seen that the two guide parts (132a, 132b) are spaced at a predetermined interval.

Thus, as the two guide members 132a and 132b are stacked and assembled, there is a certain distance between the two guide members 132a and 132b. However, as shown in FIGS. 4 and 5, in the overall contour shape The two guide members 132a and 132b form a cylindrical shape that can be inserted into the outer cylinder 110.

As described above, in the bubble generator 100 of the present invention, a guide member 132a, 132b having a spiral structure is provided inside the outer cylinder 110, and the spiral guide member 132a, 132b has a spiral spiral of water. It allows the generation of flow, ie vortices.

In addition, the contact member 133 is a rod-shaped length member having a predetermined length, and is installed to extend in the transverse direction between the two guide members 132a and 132b, in particular between the two guide members 132a and 132b. Connect to integrate into a single structure.

The surface of the contact member 133 is provided with a plurality of protrusions 134 having a predetermined length protruding to be arranged at a predetermined interval along the longitudinal direction of the contact member 133, the protrusions 134 in the preferred embodiment Each of the contact members 133 may be formed to protrude in both the left and right directions, for example, on the cross section of the contact member 133.

The notch 133a is formed long on the surface of the contact member 133 along the axial direction, and the notch 133a may be formed on the upper and lower surfaces of the contact member 133 at 180 ° intervals on the cross section of the contact member 133. The notch 133a serves to further promote bubble generation.

In addition, the notches 135 are formed long along the axial direction of the surface of each of the protrusions 134, and the notches 135 may be formed on the upper and lower surfaces of the protrusions 134 at 180 ° intervals. This notch 135 serves to further promote bubble generation.

FIG. 5 schematically illustrates a direction in which the contact member 133 is disposed in the bubble generating assembly 131 which is an assembly of the guide members 132a and 132b and the contact member 133 (axially indicated). The axis of the contact members 133 to be displayed is shown in a straight line.

The contact members 133 are arranged in the radial direction passing through the center thereof in the shape of the cylinder formed by the guide members 132a and 132b as shown in FIG. 3, and adjacent contacts as shown in FIG. 6. The members 133 (upper and lower contact members) are sequentially elongated in the twisted direction by a predetermined angle α.

As a result, the contact members 133 are installed as described above, and thus the contact members 133 are stacked up and down inside the guide members 132a and 132b, and the air blown out of the air blower pipe 120 is disposed. Is moved upwards with the sewage to pass through the contact members 133 stacked up and down.

As described above, in the bubble generating apparatus 100 of the present invention, a plurality of contact members 133 are arranged and installed in the outer cylinder 110. In the conventional apparatus, the air and the water passing through the cylinder have a high passing speed. Although the time to collide with the water was short, this problem is solved by arranging a plurality of contact members in the present invention.

In particular, since the contact members 133 are arranged to be sequentially twisted by a predetermined angle, the arrangement of the contact members 133 becomes a spiral arrangement in the guide members 132a and 132b, and not merely to arrange a plurality of contact members. By spirally arranging, it is possible to further lengthen the contact time between air and water inside.

In addition, the outer circumferential surfaces of the guide members 132a and 132b are protruded to extend in the axial direction of the contact member 133, and the notches extend along the axial direction on the surface of each of the outer protrusions 136. 137 is formed.

In this case, notches 137 may be formed on the upper and lower surfaces of the outer protrusions 136 at 180 ° intervals, respectively, and the notches 137 may further promote bubbles.

The outer protrusions 136 protruding from the outer circumferential surfaces of the guide members 132a and 132b are arranged along the spiral on the cylindrical outer circumferential surfaces formed by the guide members 132a and 132b as shown in FIG. 4.

Bubble generation assembly 131 is configured as described above is fixed to the interior of the outer cylinder 110, in the preferred embodiment via the support portion 138, the end of the guide member (132a, 132b) is integrally fixed to the outer cylinder ( It is fixed to the inner side of (110).

The support part 138 is a component that couples the bubble generating assembly 131 including the guide members 132a and 132b with the outer cylinder 110 and supports the bubble generating assembly 131 in the outer cylinder 110, as shown in FIG. 3. As shown in FIG. 1, the periphery of the outer cylinder 110 is formed in a state in which a periphery of the guide member 132a and 132b is fixed to the upper surface thereof so as to allow air and sewage to pass therethrough. By being fixed to the side, the guide member 132a, 132b, the support 138, the outer cylinder 110 is integrated into one structure.

As a result, the air that is ejected upward from the air outlet port and passes through the inside of the outer cylinder 110 passes through the inside and the outside of the guide members 132a and 132b together with the sewage, wherein the air and the sewage are guide members 132a and 132b. ), The contact member 133 and the protrusion 134, the outer protrusion 136 is in contact with the passage.

As described above, in the bubble generating apparatus 100 of the present invention, air and sewage of the contact members 133 in which the guide members 132a and 132b having a spiral structure, the contact members 133 stacked up and down, and the notches 135 and 137 are formed. The bumps 134 and the outer protrusions 136 of the guide members 132a and 132b collide with each other and pass therebetween. In particular, the air blown out of the air blower pipe 120 is brought into contact with the contact members 133 and the protrusions 134 and 136. As it passes through, it is cut and pulverized to generate fine bubbles.

As described above, a plurality of contact members 133 and protrusions 134 and 136 are installed inside the outer cylinder 110 to increase the contact time of air and water, thereby maximizing dissolved oxygen in the water.

Hereinafter, a process in which fine bubbles are generated and vortices are mixed and mixed in the bubble generator of the present invention will be described in detail.

First, the air is ejected upward from the inside of the outer cylinder 110 of the bubble generator 100 through the air blower pipe 120 connected to the air supply source, at this time by the air blown upwards to the lower portion of the outer cylinder 110 Sewage, that is, water and sludge (sludge), are drawn up into the outer cylinder 110 by the airlift effect.

As a result, the wastewater is pulled upward from the inside of the outer cylinder 110 together with air to pass through the bubble generating assembly 131.

In the bubble generating assembly 131, the air and the sewage pass through, the dispersion is caused by the collision, and a sudden pressure drop occurs, and the oxygen is contained in a high concentration while forcibly dissolving oxygen in the water in the cavitation.

In particular, the air is blown to generate a rapid flow of water, and at the same time, the air is cut and pulverized through the contact member 133 and the protrusion 134 of the bubble generating assembly 131, and thus fine bubbles are generated. To be generated.

In addition, while the wastewater collides with the guide members 132a and 132b of the helical structure and passes through the space between the contact members 133 which are arranged in a twisted manner, the flow of the wastewater becomes a flow that turns helically, and the bubble generating assembly ( The constituent parts of the guide members 132a and 132b, the contact member 133, and the protrusions 134 of the 131 cause the generation of vortices (spiral water flow) that effectively increase the contact efficiency of the gas-liquid. .

When a vortex occurs, a cavity is formed in the rotating shaft part, and a strong force is generated by the whirlwind. In addition, pressure is applied to cut and pulverize the inhaled air, and in the state where oxygen is dissolved more, the flow rate of water is faster and the pressure is lowered, thereby causing cavitation and foaming and microbubbles.

As described above, the bubble generator 100 of the present invention finely breaks the air blown into the rapid flow of water to generate fine bubbles, and induces the generation of fine bubbles and an increase in agitation power by vortexing of water to the oxygen to the sewage at high concentrations. It can dissolve (maximization of dissolved oxygen in water), it is possible to supply a high concentration of oxygen in the static tank 1 (improvement of dissolution efficiency), there is an effect of increasing the amount of dissolved oxygen in the septic tank and purification efficiency.

In particular, by drawing water from the lower portion of the outer cylinder 110 generates circulation and improves the circulation of fine bubbles and water, oxygen can be evenly dispersed throughout the septic tank 1, the septic tank easy to bias anaerobic conditions Inner corners and the like can also be maintained under aerobic conditions, and evenly disperse high concentrations of oxygen throughout the septic tank can effectively increase the overall dissolved oxygen amount and purification efficiency.

7 is a view showing the principle that the cavitation occurs in the contact member and the projection of the contact member, the outer projection of the guide member in the bubble generating device according to the present invention. 133 and the periphery of the protrusions 134 and 136 are vortices generated by the notches 133a, 135 and 137 on the upper and lower surfaces, and the notches 133a, 135 and 137 increase the speed of the fluid and lower the pressure. Cavitation), which results in bubble explosion and microbubbles.

In addition, in the bubble generating device 100 of the present invention, the outer cylinder upper end portion which is the outlet of the outer cylinder 110 may be additionally installed as shown in FIG. 1, and thus, the blocking member 111 may have an outer cylinder upper end portion. If it is installed at a predetermined height in the center of the fluid to be concentrated in the center to be directed upwards to the side it is possible to lengthen the residence time of the bubbles in the septic tank (1). The membrane member 111 may be installed to be supported by a bracket 112 fixed to the upper end of the outer cylinder.

On the other hand, Figure 8 is a cross-sectional view showing another embodiment of the bubble generating apparatus according to the present invention, the bubble generating device is a view showing an example installed in the septic tank with the air ejection pipe assembled, Figure 9 is a view 8 Is a cross-sectional view taken along line 'B-B'. In addition, Figure 10 is a perspective view of the bubble generating device shown in Figure 8, Figure 11 is a perspective view showing the arrangement of the bubble generating assembly.

As illustrated, in the embodiment of FIG. 8, the bubble generating means 130 inside the outer cylinder 110 includes a plurality of bubble generating assemblies 131.

That is, the configuration of the air blowing pipe 120, the outer cylinder 110, the support portion 138 and the like is the same as the embodiment of Figure 1, but the bubble generating assembly 131 installed in the outer cylinder 110 is composed of a plurality of There is a difference. In addition, in the case of the guide member in each bubble generating assembly 131, one spiral guide member 132 is used, wherein each contact member 133 has a structure in which one end is fixed to and supported by the guide member 132.

Except for this, the configuration of the contact member 133, the protrusion 134, and the outer protrusion 136 in each bubble generating assembly 131 is the same as that of the embodiment of FIG. 1.

Referring to FIG. 11, it can be seen that three bubble generating assemblies 131 are placed side by side in the outer cylinder 110.

In addition, the conical closure member 111 in the upper end of the outer cylinder 110 can be installed in the same manner as in the embodiment of FIG.

In this configuration using a plurality of bubble generation assembly, air blowing, bubble generation, vortex formation, air and filth mixing, oxygen dissolution and the like described in the above embodiments and principles or processes will be omitted.

The preferred embodiment of the present invention has been described above. However, it is to be understood that the present invention is not limited to the above-described embodiments, and the above-described embodiments merely represent a part of various embodiments to which the principles of the present invention are applied. Those skilled in the art to which the present invention pertains may make various changes without departing from the spirit of the technical idea of the present invention described in the claims below.

1 is a cross-sectional view showing a bubble generating device according to the present invention, a bubble generating device showing an example installed in the septic tank with the air blowing pipe assembled;

Figure 2a and 2b is a perspective view of the bubble generating apparatus according to the invention, Figure 1a is a top perspective view, Figure 1b is a bottom perspective view,

3 is a cross-sectional view taken along the line 'A-A' in FIG. 1,

4 is a front view showing a fine bubble generating means in the bubble generating apparatus according to the present invention,

5 is a perspective view showing a fine bubble generating means in the bubble generating apparatus according to the present invention,

Figure 6 is a plan view showing the arrangement direction of the contact member in the bubble generating apparatus according to the present invention,

7 is a view showing the principle that the cavitation occurs in the contact member and the projection of the contact member, the outer projection of the guide member in the bubble generating device according to the present invention,

8 is a cross-sectional view showing another embodiment of the bubble generating apparatus according to the present invention, the bubble generating device is a view showing an example installed in the septic tank with the air blowing pipe assembled;

FIG. 9 is a cross sectional view taken along line 'B-B' in FIG. 8;

10 is a plan perspective view of the bubble generator shown in FIG. 8;

11 is a perspective view showing an arrangement of the bubble generating assembly in the bubble generating device shown in FIG.

<Explanation of symbols for the main parts of the drawings>

1: Septic tank 100: Bubble generator

110: outer cylinder 111: membrane member

120: air outlet pipe 121: outlet end

130: bubble generation means 131: bubble generation assembly

132, 132a, 132b: guide member 133: contact member

133a: notch 134: protrusion

135: notch 136: outer protrusion

137: notch 138: support

Claims (21)

Outer cylinder 110 and the air blowing pipe 120 is inserted into the outer cylinder 110 in a state connected to the air supply source is provided to eject the air upward through the outlet end 121 in the outer cylinder 110. And, the inside of the outer cylinder 110 is installed to the upper side of the air blowing pipe 120 and the fine air generated during the passage of the air ejected from the outlet end 121 of the air blowing pipe 120 with the sewage Is configured to include a fine bubble generating means 130 to, The microbubble generating means 130 is formed in a helical structure, the guide member is formed to extend vertically in the outer cylinder 110, and fixedly installed in the transverse direction long inside the guide member protruding portion (134) The bubble generating assembly 131 including the contact members 133 repeatedly formed at predetermined intervals along the longitudinal direction is fixed to the inside of the outer cylinder 110 by a support part 138. The air and sewage contact with the guide member, the contact member 133 and the projection 134 while passing through the inside and the outside of the guide member by the airlift effect in the outer cylinder 110 of the air and sewage Microbubble generating device characterized in that the microbubble generation by the vortex formation and air crushing is made. The method according to claim 1, The bubble generating assembly (131) is a microbubble generating device characterized in that the contact member 133 is formed in a structure in which the contact member 133 is connected to each other in a spiral structure formed in a spiral structure. The method according to claim 2, The two guide members 132a and 132b are each formed of a plate-shaped length member having a spiral structure, and are disposed inside the outer cylinder 110, so that the two guide members 132a and 132b are alternately arranged to be spaced apart from each other. Microbubble generating device, characterized in that fixed by the contact member 133 in a superimposed state. The method according to claim 2, The contact members 133 are formed as rod-shaped length members to connect the two guide members 132a and 132b from the inner side to the transverse direction, and the contact members 133 are the two guide members 132a, 132b) is a fine bubble generator characterized in that the structure is arranged stacked up and down. The method according to claim 4, The contact members 133 are disposed long in the radial direction passing through the center of the cylindrical shape formed by the two guide members 132a and 132b, and the contact members 133 stacked up and down are sequentially arranged in a spiral arrangement. Microbubble generating device, characterized in that disposed in the direction twisted by an angle (α) long. The method according to any one of claims 2 to 5, Microbubble generating device, characterized in that the notch (133a) for promoting the generation of bubbles on the surface of the contact member 133 is formed long along the axial direction. The method according to claim 6, The notch (133a) is a fine bubble generator, characterized in that formed on the upper and lower surfaces of the contact member 133, respectively. The method according to claim 1, The microbubble generating device 130 is characterized in that the microbubble generating device is configured by installing a plurality of bubble generating assembly 131 side by side inside the outer cylinder (110). The method according to claim 8, The bubble generating assembly 131 is a microbubble generating device, characterized in that the one end of the contact member 133 is fixed to the inside of the guide member 132 formed in a spiral structure. The method according to claim 9, The guide member 132 is formed of a plate-shaped length member having a spiral structure and disposed inside the outer cylinder 110, and the contact members 133 are formed of a rod-shaped length member to guide the member 132. Microbubble generating device characterized in that the laminated arrangement up and down along. The method according to claim 10, The contact members 133 are arranged to extend in the radial direction passing through the center of the cylindrical shape formed by the guide member 132, and the angles (α) sequentially determined so that the contact members 133 stacked vertically are arranged in a spiral configuration. Microbubble generating device characterized in that it is disposed long in the twisted direction by. The method according to any one of claims 9 to 11, Microbubble generating device, characterized in that the notch (133a) for promoting the generation of bubbles on the surface of the contact member 133 is formed long along the axial direction. The method according to claim 12, The notch (133a) is a fine bubble generator, characterized in that formed on the upper and lower surfaces of the contact member 133, respectively. The method according to claim 2 or 9, The outer circumferential surface of the guide member (132, 132a, 132b) microbubble generating device characterized in that the outer protrusions (136) are formed to protrude so as to extend in the axial direction of the contact member (133). The method according to claim 14, Microbubble generating device, characterized in that the notch (137) for promoting the generation of bubbles on the surface of the outer protrusion 136 is formed long along the axial direction. The method according to claim 15, The notch 137 is a fine bubble generator, characterized in that formed on the upper and lower surfaces of the outer projection 136, respectively. The method according to claim 1, Protruding portions 134 of a predetermined length are formed long on the surface of the contact member 133, the notch 135 for promoting the generation of bubbles is formed on the surface of each of the protrusions 134 long along the axial direction Fine bubble generator. The method according to claim 17, The notch 135 is a fine bubble generator, characterized in that formed on the upper and lower surfaces of the projection 134, respectively. 19. The method of claim 18, The projections 134 are microbubble generating device, characterized in that protruding from the contact member 133 in both directions. The method according to claim 1, The support portion 138 is made of a plate-shaped with a through-hole formed in the center to allow air and sewage to pass through, the edge of the guide member is fixed to the upper surface in the state that the peripheral portion is fixed to the inner surface of the outer cylinder 110 to generate the bubble Microbubble generating device, characterized in that for fixing the assembly (131). The method according to claim 1, Microbubble generating device, characterized in that the conical membrane member 111 is installed at the upper end of the outer cylinder to be the outlet of the outer cylinder (110).

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