KR100934587B1 - Diffuser and manufacturing method - Google Patents

Abstract

The present invention relates to an apparatus for supplying dissolved oxygen to a reaction tank, a lake, a river and a farm of a sewage treatment plant in order to cultivate aerobic microorganisms, increase the self-cleaning ability of the water system, and to culture fish and shellfish at high density. The present invention relates to a diffuser and a manufacturing method for increasing dissolved oxygen by dispersing air into fine bubbles in water.

The present invention is provided with a plurality of diffusers that can generate fine bubbles in the water, is provided with at least one air supply port for receiving air from the blower, and firmly two or more small bodies formed of thermoplastic synthetic resin By providing the diffuser which is integrally fused, the airtightness of the joint is excellent, firm, and the oxygen transfer rate can be stably maintained.

Dissolved oxygen, diffuser, diffuser, fusion

Description

Diffuser and Manufacturing Method Thereof}

The present invention relates to a device for supplying oxygen to a reaction tank, a lake, a river, and a fish farm of a wastewater treatment plant, in order to cultivate aerobic microorganisms, increase the self-cleaning ability of the water system, and farm fish and shellfish at high density. The present invention relates to a diffuser and a manufacturing method for increasing dissolved oxygen by dispersing into fine bubbles in water.

Conventional diffusers are manufactured in various shapes, structures, and materials, and various types are supplied. Among them, oxygen in the membrane diffuser, in which the microacid mechanism is perforated, is absorbed into the soft membrane. The tremor is the highest.

However, because the membrane diffuser is a structure in which the elastic membrane repeats expansion and contraction, the endurance life is shortened due to the fatigue load, and the soft EPDM membrane, which has low impact resistance and wear resistance, collides with the flowing carrier and wears when the fluid carrier is filled. There is a problem that is broken.

In addition, in the rod-type membrane diffuser, bubbles rise along the surface of the rod even at the bottom of the rod, thereby increasing the frequency at which the bubbles collide with each other and colliding with the bubbles to reduce the oxygen transfer efficiency.

In addition, the disk-type membrane diffuser does not coalesce bubbles and has an excellent oxygen transfer rate. However, the EPDM disc is fixed on the disk-shaped board with a high outer frame, but the outer frame and the lower board are fixed to each other with screws or assembled using bolts and nuts, so that the screwed parts are loose or the bolt nuts are loosened. You can't do it and you can come loose.

In addition, in the membrane diffuser, the diffuser can be closed by the attachment of the biofilm, and if the diffuser is closed, it is cumbersome to maintain the membrane foreclosure by formic acid.

Therefore, the present invention has been devised to overcome the problems of the prior art as described above, by using a durable material to form a fine air diffuser to assemble finely, long life, no air leakage to the side only air diffuser Air is blown out through the air, the oxygen transfer rate is stable, and the provision of a high diffuser is a technical problem.

In addition, the technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description. Could be.

The diffuser according to the present invention for achieving the above object is provided with a plurality of diffusers that can generate bubbles in the water and is provided with at least one air supply port for receiving air from the blower and molded of thermoplastic synthetic resin Two or more small bodies can be assembled in various forms, such as bonding, screwing, or using bolt nuts. In particular, by providing a diffuser that is assembled by combining the small bodies firmly integrally by fusion, durability and airtightness was improved.

The small body may be formed of a lower body having an air supply port and an upper body having an air diffuser, and the upper body and the lower body are formed of thermoplastic synthetic resin having excellent durability, and the upper body and the lower body using heat. By fusion bonding of these, it can be firmly assembled into an air supply port, an air diffuser, and an air diffuser formed with a space through which air can be distributed.

In addition, the diffuser of the diffuser according to the present invention is formed into an diffuser in the form of a viscous tube by gradually reducing the opening while penetrating the cross section of the member from the inner space toward the outer surface.

Therefore, since the cross section of the diffuser is protruded at an acute angle, the area in which the biofilm is attached and multiplies is minimized, and the microorganisms of the acutely protruded areas are easily detached and almost impossible to attach, due to the shear force caused by the air ejection. Since it is difficult to flow back to the inside through the external spout of the axle tube type diffuser, the diffuser is not closed and the diffuser ability can be maintained uniformly.

In addition, when the compressed air passes through the diffuser having an asymmetrical cross section, the pressure energy of the compressed air is converted into velocity energy and the wind speed is increased, so that some foreign matter trapped in the diffuser can be removed from the diffuser. .

By forming the body constituting the diffuser according to the present invention such as ABS resin, it is possible to increase the wear resistance and impact resistance, in addition to a variety of synthetic resin materials such as hard PE, HDPE, PP, ABS, PVC, Polyurethane resin can do.

As described above, the diffuser formed by fusion bonding the synthetic resin molded article has excellent durability and airtightness. However, in manufacturing the injection molding mold for injection molding the diffuser, it is very difficult to process the holes and pins for forming the diffuser finely. In addition, even when the holes and pins are finely processed, there is a problem in that stable maintenance of the injection mold is difficult because the end surface of the member is too small to be easily broken or worn.

Therefore, in the present invention, in manufacturing the injection mold, the opening width of the diffuser is made to be relatively large in the range of 0.5 to 2.0 mm, and the pins and holes are manufactured, and the injection molded surface of the diffuser and the small body formed with the diffuser are formed. A pore-shrinkage means was formed to reduce the pore size of the diffuser by coating the coating film and adjusting the thickness of the diffuser to form a fine diffuser with the opening width of the diffuser reduced to 0.2 to 1.0 mm.

In this way, if the coating film forming process is applied to the diffuser formed in the 0.5 ~ 2.0mm range of the coating selected from polyurethane, epoxy or various kinds of paint, the opening size is 0.2 ~ 1.0 than the diffuser formed by the thickness of the coating film. Microdispersion is reduced to mm. As the diffuser is finely shrunk, the size of the bubble is reduced and the specific surface area of the bubble is increased, thereby realizing an improved diffuser having an increased oxygen transfer rate.

The pore reduction process by the coating film is not limited to the diffuser formed by thermoplastic synthetic resin, but can also be formed on the diffuser side formed in a metal material or a ceramic material to achieve a fine diffuser mechanism and increase the oxygen transfer rate. It is included in the scope of the invention.

Here, the pore reduction means may be a film having micropores formed thereon, without being limited to a coating film applied to the surface of the diffuser and the member on which the diffuser is formed.

The film formed with pores may be attached to an diffuser formed of a thermoplastic synthetic resin, an diffuser formed by punching a metal plate, a synthetic resin yarn or a mesh woven from a metallic yarn, and the like, thereby realizing an diffuser provided with a fine diffuser.

The diffuser according to the present invention having the configuration as described above and the diffuser according to the manufacturing method are installed in a reaction tank and an appeal of a sewage treatment facility, a river, a fish farm, etc. By increasing the oxygen, there is an advantage that can cultivate aerobic microorganisms, increase the self-cleaning ability of the water system and can cultivate fish and shellfish at a high density.

In addition, according to the diffuser according to the present invention, there is an advantage that it is possible to provide a diffuser with excellent durability, airtightness and air permeability, which is structurally strong and excellent in durability, which can maintain a high oxygen transfer rate by the microacid mechanism.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1A is a vertical cross-sectional view of the upper body 11 provided with a plurality of diffusers 20, and FIG. 1B is a vertical cross-sectional view of the lower body 12 provided with the air supply port 30.

When the small bodies 11 and 12 illustrated as the upper body and the lower body are joined to each other by being joined to each other by the bonding part 14, the space in which air can be distributed therein as shown in FIG. 3. The diffuser 1 formed with the 13 is formed.

Here, the diffuser 1 heats the joints 14 of the small bodies 11 and 12 formed of thermoplastic synthetic resin by heating with heat transfer plates, and then compresses each other in a molten state, and then cools and bonds them together. Can be combined by means.

In addition, the diffuser 1, the surface of the adhesive portion is melted by using the frictional heat generated by contacting the joints 14 of the small bodies (11, 12) formed of thermoplastic synthetic resin to each other and rotating at high speed It can be combined by the rotation fusion method of stopping the rotation in the state, pressing and cooling to integrally combine.

In addition, the diffuser 1 is irradiated with ultrasonic waves to the joints 14 of the body bodies 11 and 12 formed of thermoplastic resin, and compressed in the molten state by using heat generated by molecular vibration. And it can be combined by the ultrasonic fusion method of cooling and integrally bonding.

As described above, the fusion of the junction part 14 may be performed by a method selected from among thermal fusion, rotation fusion, and ultrasonic fusion methods. As in this embodiment, the disk-type diffuser 1 requires less energy than the rotation fusion method. It is preferable because the time required for fusion is shortened.

The diffuser 1 in this embodiment illustrates a disc shape, and FIG. 2A is an outer plan view of the upper body 11 provided with a plurality of diffusers 20, and FIG. 2B shows an air supply port 30. The outer plan view of the provided lower body is shown.

The upper and lower body bodies 11 and 12 are fused and combined into one to form an diffuser 1.

3 is a longitudinal cross-sectional view illustrating the diffuser with improved durability and airtightness according to the present invention.

In the diffuser 1 according to the present invention, two or more small bodies 11 and 12 formed of a thermoplastic synthetic resin are fusion-bonded to each other at a joint 14, and an air pipe 40 for pumping air from a blower is provided. One or more air supply ports 30 are provided to be connected to communicate with each other, and a space 13 through which air is distributed may be formed therein, and a plurality of micro acid mechanisms communicating with the internal space may be formed on the surface thereof. 21).

Here, the diffuser 20 is a viscous tubular diffuser 20 whose opening is gradually reduced while penetrating the cross section of the member from the inner space toward the outer surface, and the outer shape of the diffuser 1 is a disc type. It is illustrated.

Here, the pore reduction means by the coating film 22 is attached to the diffuser 20 of the diffuser 1 molded from the thermoplastic resin, so that the width of the opening is more finely adjusted. In this way, if a coating film forming process for applying a selected one of polyurethane, epoxy or various kinds of paints is added to the diffuser 20 formed in the range of 0.5 to 2.0 mm, the opening is formed by the thickness of the coated film 22. The size of the micro diffuser 21 is reduced to form a range of 0.2 ~ 1.0mm.

The pore-reducing means is not limited to the coating film 22 and may be attached to a film (not shown) having micropores formed on the diffuser 20 side to make a fine diffuser.

4A is a top perspective view of the diffuser, FIG. 4B is a bottom perspective view of the air supply port, and FIG. 4C is a side exterior view of the diffuser.

In addition, the external shape of the diffuser 1 according to the present invention is not limited to a disc shape, and can be molded without limitation to a tubular shape, a disc shape, a plate shape, a cone shape, a spherical shape, a hemispherical shape, and the like.

The present invention can be applied to the contaminated water system such as the reaction tank and appeal and sewage of the sewage water treatment plant, and can improve and improve the water quality, and can be applied to the farms to enable high-density farming of fish and shellfish.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

Figure 1a is a cross-sectional view showing the upper body of the diffuser according to an embodiment of the present invention.

Figure 1b is a cross-sectional view showing the lower body of the diffuser according to an embodiment of the present invention.

FIG. 2A is a plan view illustrating an upper body having a plurality of diffusers shown in FIG. 1A.

Figure 2b is a plan view showing a lower body having an air supply port shown in Figure 1b.

3 is a cross-sectional view showing the diffuser according to an embodiment of the present invention.

Figure 4a is a top perspective view showing the top of the diffuser according to an embodiment of the present invention.

Figure 4b is a perspective view showing the lower portion of the diffuser according to an embodiment of the present invention.

Figure 4c is a side view showing the diffuser according to an embodiment of the present invention.

※ Explanation of code about main part of drawing ※

1: diffuser

11: upper body

12: lower body

13: space

14: junction

20: diffuser

21: microacid mechanism

22: coating film

30: air supply port

40: delivery pipe

Claims (13)

A plurality of diffusers and one or more air inlets, An diffuser characterized in that the two or more small bodies formed of thermoplastic synthetic resin are combined. The method of claim 1, And the bond is a fusion bond. The method of claim 1, The diffuser is a diffuser, characterized in that the viscous tubular shape of the opening is gradually reduced in the air blowing direction. The method of claim 1, And a pore reduction means further configured in the diffuser to form a fine diffuser in which the opening of the diffuser is more finely adjusted. The method of claim 4, wherein And the pore reduction means is a coating film applied to the diffuser side. The method of claim 4, wherein The pore reduction means is a diffuser, characterized in that the film is formed with micropores attached to the diffuser side. The method of claim 4, wherein And an opening width of the diffuser ranges from 0.5 mm to 2.0 mm, and an opening width of the micro diffuser ranges from 0.2 mm to 1.0 mm. Forming a plurality of diffusers and at least one air inlet, A method for producing an diffuser, comprising combining two or more small bodies formed of thermoplastic synthetic resins by a fusion method. The method of claim 8, The fusion method is a diffuser manufacturing method, characterized in that the thermal fusion method. The method of claim 8, The welding method is a diffuser manufacturing method, characterized in that the rotation welding method. The method of claim 8, The welding method is a diffuser manufacturing method, characterized in that the ultrasonic welding method. Forming a plurality of diffusers and at least one air inlet, And an opening of the diffuser is reduced in size by a pore reduction method of coating a coating film on the diffuser side. The method of claim 12, The pore reduction method is a pore reduction method for attaching a film having a micro-pores formed on the diffuser side.

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