WO2012063995A1 - Membrane diffuser having counterflow prevention function - Google Patents

Membrane diffuser having counterflow prevention function Download PDF

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Publication number
WO2012063995A1
WO2012063995A1 PCT/KR2011/000853 KR2011000853W WO2012063995A1 WO 2012063995 A1 WO2012063995 A1 WO 2012063995A1 KR 2011000853 W KR2011000853 W KR 2011000853W WO 2012063995 A1 WO2012063995 A1 WO 2012063995A1
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WO
WIPO (PCT)
Prior art keywords
membrane
air
diffuser
air outlet
backflow
Prior art date
Application number
PCT/KR2011/000853
Other languages
French (fr)
Korean (ko)
Inventor
한상배
Original Assignee
주식회사 그린기술산업
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Filing date
Publication date
Application filed by 주식회사 그린기술산업 filed Critical 주식회사 그린기술산업
Priority to CN2011800542442A priority Critical patent/CN103201223A/en
Priority to JP2013538615A priority patent/JP2013545604A/en
Publication of WO2012063995A1 publication Critical patent/WO2012063995A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/208—Membrane aeration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/06—Tubular membrane modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • B01F23/231231—Diffusers consisting of rigid porous or perforated material the outlets being in the form of perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23124—Diffusers consisting of flexible porous or perforated material, e.g. fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23125—Diffusers characterised by the way in which they are assembled or mounted; Fabricating the parts of the diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231262—Diffusers characterised by the shape of the diffuser element having disc shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to an apparatus for supplying oxygen to water in a reaction tank, a lake, a river, and a farm of a wastewater treatment plant, in order to cultivate aerobic microorganisms, increase the self-cleaning ability of the water system, and grow fish and shellfish at high density.
  • the present invention relates to a membrane diffuser that disperses supplied air into fine bubbles in water to increase dissolved oxygen.
  • Conventional diffusers are manufactured in various shapes, structures, and materials, and various types are supplied.
  • the diffuser formed by the corrosion resistant metal plate material and the diffuser formed using the pores formed by adhering the granular ceramic as the diffuser are excellent and durable.
  • the aeration is low and the oxygen supply is stopped, the water body flows back through the diffuser to the feeder, so that deposits accumulate inside the feeder.
  • the membrane diffuser in which the fine diffuser is perforated in the soft membrane has the highest oxygen transfer rate.
  • the membrane diffuser is a structure in which the elastic membrane expands due to compressed air supplied from the blower, it may be excessively expanded and ruptured or lose its elasticity.
  • a soft membrane such as rubber or EPDM material having low impact and abrasion resistance may be used as a fluidized bed carrier. When filled, there is a problem of colliding with the flowing carrier to be worn or broken.
  • the conventional membrane diffuser is configured to arrange the EPDM disc and the upper case on the lower case and to assemble the fixing frame to the lower case by screwing.
  • the screw type for forming the acid and bone together in the fixed frame and the lower case takes a long time to draw out the mold during injection, so the productivity of the injection molding machine is low, the wage rate required for molding and assembly is increased, and the assembly state is not firm or uniform. Can not do it.
  • the assembly is not firm, such as loose assembly or loosening the bolt nut. Since bolts and nuts, which are expensive corrosion-resistant metal materials, are assembled by manpower, it is uneconomical because the procurement cost and labor cost are excessive.
  • the conventional membrane diffuser requires at least three molded parts, such as the upper case, the lower case, and the fixing frame, except for assembly parts such as bolts and nuts, which is uneconomical in terms of material requirements, molding cost, and parts management cost. As the volume increases, the logistics cost increases, and the capacity of the reactor is encroached.
  • the lower side of the membrane is in close contact with the surface of the upper casing of the diffuser by the external force caused by hydraulic pressure and the elasticity of the membrane itself when it is aerated, or the diffuser is formed by the elasticity of the membrane diffuser itself. It is constricted so that the backflow can be prevented.
  • the entire surface of the lower part of the membrane is hard to be evenly adhered to the surface of the upper casing of the diffuser, and as the aeration operation through the compressed air passes through the diffuser for a long time, the diffuser expands or the fatigue and aging of the material Improvements are needed because the contractile force of the diffuser can be reduced so that the waterbody can flow back into the diffuser and the vent.
  • the present invention has been made to overcome the problems of the prior art as described above, high oxygen transfer rate, simple components, easy assembly and economical, membrane cracking and rupture can be prevented, protect from external impact
  • the technical problem is to provide a membrane diffuser having a backflow prevention function to solve the problem of the backflow inflow of the water body into the diffuser and the exhaust pipe.
  • a bubble is generated in the water and made of a flexible material and provided with a plurality of fine acid diffuser, the air supply port and the air outlet is provided from the blower through the air supply port
  • a body having an air accommodating part for accommodating air to be discharged to the membrane through the air spout, a backflow preventing plug for preventing inflow of the water body, and the membrane to be fixed to the upper air spout side of the body
  • the components such as the fixing frame were combined to realize a membrane diffuser equipped with a backflow prevention function.
  • the backflow prevention stopper is configured on the lower surface of the membrane at a position coinciding with the air outlet, and when air is supplied and the membrane is expanded, the air bubbles are opened to eject the micro bubbles through the diffusers formed in the membrane.
  • the air outlet is sealed to open and close the water body so that the water body does not flow back into the air accommodating part.
  • the membrane diffuser was configured by including a backflow preventing projection that prevents the backflow of the water body.
  • the backflow preventing protrusion is configured in the form of a wall surrounding the air outlet, and when the air is supplied, the membrane and the backflow preventing protrusion are expanded to be spaced apart from each other to open the air outlet so that the aeration is made, and the air supply is stopped. During aeration, the contracted membrane is in close contact with the upper jaw of the backflow preventing protrusion to seal the air outlet so as to prevent the water body from flowing back into the air accommodating part.
  • the backflow prevention plug and the projection prevent the backflow into the diffuser even during aeration.
  • the body containing the air receiving portion can be configured by combining two small bodies.
  • the fixing frame and the bodies were formed of a synthetic resin and the membrane was inserted therein, and at least one of the small bodies was fused to each other with the fixing frame to assemble the membrane diffuser.
  • the fusion bond may be made of at least one of a thermal fusion bond, an ultrasonic fusion bond, and a rotational fusion bond.
  • the assembly method of the membrane diffuser with the backflow prevention function according to the present invention is not limited to the fusion coupling, it is possible to apply the conventional assembly method of the membrane diffuser assembled by a screw or bolt nut. Of course.
  • the body of the present invention is provided with an air supply port for receiving air and an air ejection port for ejecting air to the membrane, and the air supply port and the air ejection port are connected to each other in a simple form in which the air accommodating part is omitted. It can be configured as. As a result, the volume of the diffuser is reduced, thereby reducing the logistics cost and not encroaching on the residence time of the reactor.
  • the protective mesh has a function of preventing rupture and abrasion of the membrane by collision with a fluidized carrier which is filled for the attachment of microorganisms or suspended matter, such as a floccule suspended in water.
  • the protective net body integrally with the fixing frame to ensure excellent durability and reduced assembly parts.
  • the membrane diffuser according to the present invention is structurally strong and excellent airtightness, simple in construction, preventing damage to the membrane of the soft material, due to the backflow of water bodies and foreign matters into the diffuser and the exhaust pipe Since functional degradation is prevented, it is possible to stably maintain a high oxygen transfer rate and to provide a diffuser that is easy to maintain.
  • 1A is a side cross-sectional view showing components constituting the membrane diffuser according to the first embodiment of the present invention.
  • FIG. 1B is a side cross-sectional view of a membrane diffuser in accordance with a first embodiment of the present invention.
  • 1C is a side sectional view showing operation of the membrane diffuser according to the first embodiment of the present invention.
  • Figure 2a is a side cross-sectional view showing the components constituting the membrane diffuser according to a second embodiment of the present invention.
  • FIG. 2B is a side cross-sectional view of a membrane diffuser in accordance with a second embodiment of the present invention.
  • Fig. 2C is a side sectional view showing operation of the membrane diffuser according to the second embodiment of the present invention.
  • Figure 3a is a side cross-sectional view showing the components constituting the membrane diffuser according to a third embodiment of the present invention.
  • 3B is a side cross-sectional view of a membrane diffuser in accordance with a third embodiment of the present invention.
  • 3C is a side sectional view showing operation of the membrane diffuser according to the third embodiment of the present invention.
  • FIG. 4A is a side cross-sectional view showing components constituting a membrane diffuser according to a fourth embodiment of the present invention.
  • FIG. 4B is a side cross-sectional view of a membrane diffuser in accordance with a fourth embodiment of the present invention.
  • 4C is a side sectional view showing operation of the membrane diffuser according to the fourth embodiment of the present invention.
  • Figure 5a is a side cross-sectional view showing the components constituting the membrane diffuser according to a fifth embodiment of the present invention.
  • 5B is a longitudinal sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention.
  • 5C is a transverse cross-sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention.
  • Figure 6 is a side cross-sectional view of a membrane diffuser with a protective mesh in accordance with the present invention.
  • FIG. 7 is a plan view of the membrane diffuser with a protective mesh according to the invention.
  • FIG 8 is a perspective view showing a state in which a protective mesh is provided in the membrane diffuser according to the present invention.
  • FIG. 1A is a side cross-sectional view of the components shown to illustrate a first embodiment of a membrane diffuser in accordance with the present invention.
  • the membrane diffuser Before the assembly of the membrane diffuser according to the present invention showing the components in a separated state, made of a stretchable material and formed with a plurality of diffuser 50 and the backflow stopper 80, and at least one A first body 41 having an air supply port 10, a second body 42 having one or more air outlets 20, and a fixing frame 70 for fixing the membrane are illustrated.
  • the membrane and the second body may be sequentially inserted into the fixing frame, and the first body, the second body, and the fixing frame may be fusion-bonded to complete the diffuser.
  • the components are molded into a shape that can be assembled in the order of inserting the second body and the membrane into the interior of the first body, and in order to secure the fixing frame and the first body to each other in this order It is possible to assemble, the membrane diffuser according to the present invention is not limited in the assembly order of the components.
  • the nut can be assembled by tightening with a nut, and the same can be applied to all the following examples.
  • FIG. 1B is a side cross-sectional view of a membrane diffuser in accordance with a first embodiment of the present invention.
  • the air supply port 10 of the membrane diffuser according to the present invention is shown connected to the air supply pipe 100, a membrane made of a stretchable material and formed with a plurality of diffuser 50 and the stopper plug 80 60 is supplied with the air by the first body 41 is provided with at least one air supply port 10, and the second body 42 is provided with at least one air outlet 20 is blown out therein
  • the membrane 60 When no air is supplied, the membrane 60 is in close contact with the upper surface of the body 40 by the hydraulic pressure acting on the outside or the elasticity of the membrane. It is sealed by) and shows a watertight configuration in which the water body does not flow back to the air accommodating part 30 and the air supply pipe 100.
  • 1C is a side cross-sectional view showing the operation of the membrane diffuser according to the first embodiment of the present invention.
  • the air introduced into the air accommodating part 30 is evenly distributed to the air ejection port 20 and is ejected to the rear surface of the membrane 60.
  • the stopper 80 for preventing the flow of the back flows up, and the air ejection opening is opened, and fine air bubbles are dispersed in the water through the diffuser 50 to give up.
  • the reverse flow prevention plug 80 seals the air outlet port 20 as shown in FIG. 1B due to the contraction of the external water pressure and the membrane itself, so that the air accommodating part 30 and the exhaust pipe 100 are closed. Influx of water backflow can be blocked.
  • the fixing frame 70 and the first body 41 are fusion-bonded to each other firmly, and the outer part is also affected by a lot of external influences, and the second body 42 is simply supported by the first body. Therefore, since the fixing frame and the first body are made of a material that can be fusion-bonded with each other, and the second body has a structure in which fusion is omitted, physical properties can be different.
  • the fixing frame and the first body which are greatly influenced by the outside, are molded of ABS (Acrylonitrile-Butadiene-Styrene) resin having relatively high cost and physical properties, and are inserted into the second body.
  • Polypropylene (PP), PE (polyethylene) and the like can be molded in a relatively low-cost material and can be configured in this way in other embodiments.
  • Figure 2a is a side cross-sectional view of the components shown for explaining the second embodiment of the membrane diffuser according to the present invention.
  • the membrane 60 and at least one air supply port (10)
  • the first body 41 is provided with, one or more air outlets 20 and the second body 42 is formed with a reverse flow prevention projection 90 and the fixing frame 70 for fixing the membrane, respectively.
  • the assembly process and the assembly method can be the same as in the first embodiment.
  • FIG. 2B is a side cross-sectional view of a membrane diffuser in accordance with a second embodiment of the present invention.
  • the air supply port 10 of the membrane diffuser according to the present invention is shown connected to the air supply pipe (100), made of a flexible material and a plurality of membranes 60 formed with a plurality of diffusers 50, and one or more
  • the first body 41 having the air supply port 10 and the second body 42 provided with one or more air outlets 20 are air spaces that are supplied with air therein and are ejected therein.
  • the unit 30 is formed of one body 40 is formed.
  • the upper side of the second body has a fence-type backflow preventing projection 90 surrounding the air outlet is configured.
  • the membrane 60 When air is not supplied, the membrane 60 is in close contact with the backflow preventing protrusion 90 formed on the upper side of the body 40 by an external hydraulic pressure or elasticity of the membrane. ) Is sealed so that the water body is blocked from the inflow of the water body back to the air receiving portion 30 and the air supply pipe (100).
  • 2C is a side cross-sectional view showing the operation of the membrane diffuser according to the second embodiment of the present invention.
  • the air introduced into the air accommodating part 30 is evenly distributed to the air ejection port 20 and is ejected to the rear surface of the membrane 60.
  • the membrane is expanded by the ejected air and ascends to the upper side, the air ejection opening is opened while being separated from the reverse flow preventing projection 90 so that fine air bubbles are dispersed in the water through the diffuser 50 to give up.
  • the backflow preventing protrusion may be formed of a flexible soft material to improve watertightness.
  • 3A is a side cross-sectional view showing components of a membrane diffuser according to a third embodiment of the present invention.
  • the components of the membrane diffuser of the third embodiment according to the present invention are shown in a separated state before completion, the membrane 60 made of a stretchable material and formed with a plurality of diffusers 50 and a backflow stopper 80a. And, the body 40a is provided with at least one air supply port 10, and the fixing frame 70 for fixing the membrane, respectively.
  • the membrane may be inserted into the fixing frame, and the body and the fixing frame may be combined to complete the diffuser, and may be assembled with screws or bolt nuts, or may be fusion-coupled.
  • Figure 3b is a side cross-sectional view of the membrane diffuser according to the third embodiment of the present invention, as the air supply port and the air outlet port is shown as naturally omitted the air receiving portion.
  • the air supply port 10 of the assembled membrane diffuser is connected to the air supply pipe 100, and the membrane 60 is made of a stretchable material and has a plurality of diffusers 50 formed thereon, and the fixing frame 70 is shown. ) And the body 40a.
  • the body 40a is configured such that the air supply port 10 and one or more air outlets 20a communicate directly with each other.
  • the membrane 60 may be in contact with the surface of the body 40a by water pressure acting on the outside or contraction of the membrane itself.
  • the air outlet 20a is sealed by the backflow preventing plug 80a, the water body does not flow back into the air supply pipe 100 when it is in close contact.
  • the air supply port 10 is configured to be in direct communication with the air ejection opening 20a to directly eject the air to the lower surface of the membrane, and thus the air receiving portion is omitted, so the body is simple.
  • 3C is a side cross-sectional view showing the operation of the membrane diffuser according to the third embodiment of the present invention.
  • a groove (not shown) is formed on the upper surface of the body 40a around the air outlet 20a, the air is evenly supplied to the rear surface of the membrane while the compressed air moves through the rope groove, so that air bubbles are evenly distributed throughout the membrane. Can be dispersed.
  • the row groove may be arranged in a shape such as spiral, lattice or radial.
  • FIG. 4A is a side cross-sectional view showing components of a membrane diffuser according to a fourth embodiment of the present invention.
  • the membrane 60 is made of an elastic material and has a plurality of diffusers 50 formed therein, and at least one air supply port.
  • the body 40a provided with the 10 and the fixing frame 70 for fixing the membrane are shown separately.
  • the upper side of the body has a fence-shaped backflow prevention projection (90a) surrounding the air outlet is configured.
  • the membrane may be inserted into the fixing frame, and the body and the fixing frame may be combined to complete the diffuser, and may be assembled with screws or bolt nuts, or may be fusion-coupled.
  • Figure 4b is a side cross-sectional view of the membrane diffuser according to the fourth embodiment of the present invention, showing the appearance that the air accommodating part is naturally omitted as the air supply port and the air outlet port is directly connected.
  • the air supply port 10 of the assembled membrane diffuser is connected to the air supply pipe 100, and the membrane 60 is made of a stretchable material and has a plurality of diffusers 50 formed thereon, and the fixing frame 70 is shown. ) And the body 40a.
  • the body 40a is configured such that the air supply port 10 and one or more air outlets 20a communicate directly with each other.
  • the air outlet 20a When the air is not supplied, the air outlet 20a is sealed while the membrane 60 is in close contact with the upper end of the backflow preventing protrusion 90a by water pressure acting on the outside or contraction of the membrane itself. 100) to block backwater inflow.
  • the air supply port 10 is configured to be in direct communication with the air ejection opening 20a so as to directly eject the air to the lower surface of the membrane, and thus the air receiving portion is omitted, so the body is simple. .
  • 4C is a side sectional view showing operation of the membrane diffuser according to the fourth embodiment of the present invention.
  • a groove (not shown) is formed on the upper surface of the body around the air outlet 20a as in the third embodiment, air can be evenly supplied to the rear surface of the membrane.
  • the membrane diffuser according to the first to fourth embodiments according to the present invention can be configured without limitation to the shape of a square, a rectangle, a polygon, an ellipse and the like, without being limited to the disc shape as illustrated.
  • 5A is a cross-sectional side view of the components shown to illustrate a fifth embodiment of a membrane diffuser in accordance with the present invention.
  • the tubular body 40 is provided with at least one air supply port 10 and an air outlet port 20, and fixing frames 70 and 70a for fixing the membrane, respectively.
  • a body may be inserted into the membrane and the tubular membrane diffuser may be completed by fixing and coupling the membrane with the fixing frame.
  • 5B is a longitudinal cross-sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention.
  • the air supply port of the membrane diffuser according to the present invention is shown connected to the air supply pipe (100), made of a stretchable material and formed of a plurality of diffusers 50 and the stopper plug 80 is formed of a tubular membrane (60)
  • the tubular body 40 having an air supply port 10 and an air ejection port 20 is inserted into the inside thereof, and both ends are fixed with fixing frames 70 and 70a.
  • the air accommodating part 30 which is a space which can be formed is formed.
  • the air outlet and the counter flow stopper are disposed at positions corresponding to each other so that the air outlet can be opened and closed by the counter flow stopper.
  • the water outlet or the elasticity of the membrane may be applied. Since the membrane 60 is in close contact with the upper surface of the body 40, the air outlet 20 is sealed by the backflow preventing plug 80, so that the backflow preventing mechanism is the same as in the first embodiment.
  • a backflow preventing protrusion may be formed around the air outlet port 20.
  • 5C is a transverse cross-sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention.
  • the tubular membrane diffuser in this embodiment is configured to have a circular cross section, but is not limited thereto, and the transverse side cross-sectional shape of the tubular membrane diffuser can be configured without various limitations such as oval, rectangular, and plate. Can be.
  • These various types of membrane diffusers can be realized by shaping the body 40 so that the air receiving portion 30 has an elliptical, rectangular, narrow and long slit shape and inserting the body into the elastic membrane.
  • Figure 6 is a side cross-sectional view of a membrane diffuser with a protective mesh in accordance with the present invention.
  • the protective mesh 71 is installed on the upper surface of the outer surface of the membrane 60 at predetermined intervals, and the expansion of the membrane is suppressed by the protective mesh to prevent the elasticity of the membrane from being lowered or broken.
  • the separation distance between the membrane and the protective mesh is 20 mm, it is possible to suppress the expansion of the membrane upward by exceeding 20 mm or more.
  • connection part is firm, the quantity of components is reduced, and the assembly process can be simplified.
  • the protective net according to the present invention is not limited to the disc type membrane diffuser shown in FIG. 6, but may be applied to all embodiments as well as the tubular membrane diffuser according to the present invention.
  • FIG. 7 is a plan view of a membrane diffuser in accordance with the present invention.
  • the membrane 60 is installed on the lower portion of the radial protective mesh 71 installed in the fixing frame 70 to be protected from external shock.
  • the protective net can be applied without limitation as long as it protects the membrane, such as lattice, honeycomb structure, inhibits over-expansion, and bubbles can flow.
  • FIG 8 is a perspective view showing a state in which a protective mesh is provided in the membrane diffuser according to the present invention.
  • a protective mesh is provided with an air supply port 10 in the lower portion of the membrane diffuser, the body 40 and the protective mesh 71, the fixing frame 70 ) And the outer surface showing the membrane 60 and the like under the protective mesh.

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Abstract

The present invention relates to a diffuser which is used in a reactor of sewage and waste water treatment equipment, lakes and marshes, rivers, fish farms and the like, and disperses air supplied from a blower into microbubbles in the water, thereby increasing dissolved oxygen. The present invention provides a membrane diffuser comprising: a flexible membrane comprising a plurality of aeration holes capable of generating microbubbles in the water; a body comprising an air supply hole and an air outlet hole for being supplied with air from the blower to supply the same to the membrane; and a fixing frame for fixing the membrane, wherein a protective net body is formed on the upper surface of the membrane, a stopper or a protrusion for preventing counterflow is formed to prevent the counter-inflow of a body of water into the diffuser and an air supply pipe, and a first body and a second body of the body and the fixing frame are molded with a synthetic resin to be firmly bonded as an integral body. The sealing property of a joined portion is excellent, the over-expansion and breakage of the membrane are prevented, and the counter-inflow of a body of water into the diffuser and an air pipe is blocked, resulting in convenient maintenance and a stable maintenance of a high oxygen transfer rate.

Description

역류방지 기능이 구비된 멤브레인 산기관Membrane diffuser with backflow prevention
본 발명은, 호기성 미생물을 배양하고 수계의 자정능력을 증대시키며 어패류를 고밀도로 양식하기 위하여, 하폐수 처리시설의 반응조와 호소와 하천 및 양식장 등의 수중에 산소를 공급하는 장치에 관한 것으로, 송풍기에서 공급되는 공기를 수중에서 미세한 기포로 분산시켜서 용존산소를 증대시키는 멤브레인 산기관에 관한 것이다.The present invention relates to an apparatus for supplying oxygen to water in a reaction tank, a lake, a river, and a farm of a wastewater treatment plant, in order to cultivate aerobic microorganisms, increase the self-cleaning ability of the water system, and grow fish and shellfish at high density. The present invention relates to a membrane diffuser that disperses supplied air into fine bubbles in water to increase dissolved oxygen.
종래의 산기관(Diffuser)들은 다양한 형태와 구조 및 재질로 제작되어 여러가지 종류들이 공급되고 있다. 내부식성의 금속판재를 타공하여 산기구를 구성한 산기관, 입상의 세라믹을 접착하여 형성된 공극을 산기구로 이용하는 세라믹 산기관 등은 내구성이 우수하고 견고한 편이나, 산기구가 미세하지 못하므로 산소이전율이 낮고, 산소공급이 중지되는 비포기시에는 수체가 산기관을 통하여 송기관에 까지 역류하므로 송기관의 내부에 퇴적물이 쌓이게 된다. 역류를 방지하기 위하여 산기관의 공기공급구마다 첵크밸브(Check Valve)를 설치하는 경우에도 소요 비용에 비하여 실효성은 적다. Conventional diffusers are manufactured in various shapes, structures, and materials, and various types are supplied. The diffuser formed by the corrosion resistant metal plate material and the diffuser formed using the pores formed by adhering the granular ceramic as the diffuser are excellent and durable. When the aeration is low and the oxygen supply is stopped, the water body flows back through the diffuser to the feeder, so that deposits accumulate inside the feeder. Even if a check valve is installed at each air inlet of the diffuser to prevent backflow, the effectiveness is small compared to the required cost.
종래의 산기관 중에서 연질의 막에 미세 산기구가 천공된 멤브레인 산기관(Membrane Diffuser)은 산소이전율이 가장 높다. 그러나 멤브레인 산기관은 송풍기에서 공급되는 압축공기에 의하여 신축성 막이 팽창하는 구조이므로 과다하게 팽창되어 파열되거나 신축성이 상실되기도 하며, 내충격성과 내마모성이 적은 고무 또는 EPDM 재질 등과 같은 연질의 멤브레인은 유동상 담체가 충전된 경우 유동하는 담체와 충돌하여 마모되거나 파손되는 문제점이 있다.Among the conventional diffusers, the membrane diffuser (Membrane Diffuser) in which the fine diffuser is perforated in the soft membrane has the highest oxygen transfer rate. However, because the membrane diffuser is a structure in which the elastic membrane expands due to compressed air supplied from the blower, it may be excessively expanded and ruptured or lose its elasticity.A soft membrane such as rubber or EPDM material having low impact and abrasion resistance may be used as a fluidized bed carrier. When filled, there is a problem of colliding with the flowing carrier to be worn or broken.
또한, 종래의 멤브레인 산기관은 EPDM 원판과 상부 케이스를 하부 케이스 위에 배치하고 고정틀을 상기 하부 케이스에 나사식으로 조립하는 구성이다. 고정틀과 하부 케이스 등에 산과 골을 함께 성형하는 나사식은 사출시에 금형에서 인출하는 시간이 길게 소요되므로 사출성형기의 생산성이 낮고, 성형과 조립에 소요되는 임율이 증대되며, 조립상태가 견고하거나 균일하지 못하다. 또한 볼트와 넛트를 이용하여 조립하는 경우에는 조립부위가 헐거워지거나 볼트 넛트가 풀리는 등 조립부위가 견고하지 못한 문제점이 있다. 고가의 내부식성 금속재질인 볼트, 넛트를 인력으로 조립하므로 조달비용과 노무비용이 과다 소요되어 비경제적이다. In addition, the conventional membrane diffuser is configured to arrange the EPDM disc and the upper case on the lower case and to assemble the fixing frame to the lower case by screwing. The screw type for forming the acid and bone together in the fixed frame and the lower case takes a long time to draw out the mold during injection, so the productivity of the injection molding machine is low, the wage rate required for molding and assembly is increased, and the assembly state is not firm or uniform. Can not do it. In addition, when assembling using the bolt and the nut there is a problem that the assembly is not firm, such as loose assembly or loosening the bolt nut. Since bolts and nuts, which are expensive corrosion-resistant metal materials, are assembled by manpower, it is uneconomical because the procurement cost and labor cost are excessive.
또한, 종래의 멤브레인 산기관은 볼트, 넛트 등 조립용 부품을 제외하고서도, 상부 케이스, 하부 케이스 및 고정틀 등 최소한 3개 이상의 성형품이 소요되므로, 재료 소요량, 성형비용 및 부품관리 비용면에서 비경제적이며, 체적이 커서 물류비가 증대되고, 반응기의 용량도 잠식되는 구조이다.In addition, the conventional membrane diffuser requires at least three molded parts, such as the upper case, the lower case, and the fixing frame, except for assembly parts such as bolts and nuts, which is uneconomical in terms of material requirements, molding cost, and parts management cost. As the volume increases, the logistics cost increases, and the capacity of the reactor is encroached.
또한, 종래의 멤브레인 산기관은 비포기시에 수압에 의한 외력과 멤브레인 자체의 탄성에 의하여 멤브레인의 하부측면이 산기관의 상부케이싱의 표면에 밀착되거나, 멤브레인 산기관 자체의 신축성에 의하여 산기구가 수축되어 역류가 방지될 수 있는 구성이다. 그러나, 멤브레인 하부의 전체면이 산기관의 상부케이싱의 표면에 고르게 밀착되기 어려운 구성이며, 압축공기가 산기구를 통과하는 포기작동이 장기간 진행됨에 따라 산기구가 팽창되거나 재료의 피로 및 노화로 인하여 산기구의 수축력이 감소되어 수체가 산기관 및 송기관의 내부로 역류될 수 있으므로 개선이 요구된다.In addition, in the conventional membrane diffuser, the lower side of the membrane is in close contact with the surface of the upper casing of the diffuser by the external force caused by hydraulic pressure and the elasticity of the membrane itself when it is aerated, or the diffuser is formed by the elasticity of the membrane diffuser itself. It is constricted so that the backflow can be prevented. However, the entire surface of the lower part of the membrane is hard to be evenly adhered to the surface of the upper casing of the diffuser, and as the aeration operation through the compressed air passes through the diffuser for a long time, the diffuser expands or the fatigue and aging of the material Improvements are needed because the contractile force of the diffuser can be reduced so that the waterbody can flow back into the diffuser and the vent.
본 발명은 상기와 같은 종래 기술의 문제점을 극복하기 위하여 안출된 것으로, 산소이전율이 높고, 구성부품이 단순하고 조립이 용이하며 경제적이고, 멤브레인의 균열 및 파열이 방지될 수 있고, 외부 충격으로부터 보호될 수 있으며 특히, 역류방지 기능을 구비하여 산기관 및 송기관 내부로 수체가 역류 유입되는 문제점을 해소할 수 있는 멤브레인 산기관의 제공을 기술적 과제로 삼고 있다. The present invention has been made to overcome the problems of the prior art as described above, high oxygen transfer rate, simple components, easy assembly and economical, membrane cracking and rupture can be prevented, protect from external impact In particular, the technical problem is to provide a membrane diffuser having a backflow prevention function to solve the problem of the backflow inflow of the water body into the diffuser and the exhaust pipe.
또한, 본 발명이 이루고자 하는 기술적 과제는 이상에서 언급한 기술적 과제로 제한되지 않으며 언급되지 않은 또 다른 기술적 과제들은 아래의 기재로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.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.
상기한 목적을 달성하기 위하여, 본 발명에서는, 수중에서 기포를 발생시키며 신축성 재질로 이루어지고 복수개의 미세한 산기구가 형성된 멤브레인과, 공기공급구와 공기분출구가 구비되어 상기 공기공급구를 통하여 송풍기로부터 공급되는 공기를 수용하여 상기 공기분출구를 통하여 상기 멤브레인으로 유출되도록 하는 공기수용부가 구비된 몸체와, 수체의 역류유입을 방지하는 역류방지용 마개와, 상기 멤브레인이 상기 몸체의 상부 공기분출구 측에 고정되도록 하는 고정틀 등의 구성품들을 조합하여 역류방지 기능이 구비된 멤브레인 산기관이 실현되도록 하였다.In order to achieve the above object, in the present invention, a bubble is generated in the water and made of a flexible material and provided with a plurality of fine acid diffuser, the air supply port and the air outlet is provided from the blower through the air supply port A body having an air accommodating part for accommodating air to be discharged to the membrane through the air spout, a backflow preventing plug for preventing inflow of the water body, and the membrane to be fixed to the upper air spout side of the body The components such as the fixing frame were combined to realize a membrane diffuser equipped with a backflow prevention function.
상기 역류방지용 마개는, 상기 공기분출구와 일치하는 위치의 상기 멤브레인 하부측 표면에 구성되며 공기가 공급되어 멤브레인이 팽창되는 포기시에는 공기분출구를 개방시켜서 멤브레인에 형성된 산기구들을 통하여 미세기포가 분출되는 포기가 이루어지도록 하고 공기공급이 중단되어 상기 멤브레인이 수축되는 비포기시에는 공기분출구를 밀폐시켜서 공기수용부 내부로 수체가 역류되지 못하도록 개폐 작동을 하게 된다.The backflow prevention stopper is configured on the lower surface of the membrane at a position coinciding with the air outlet, and when air is supplied and the membrane is expanded, the air bubbles are opened to eject the micro bubbles through the diffusers formed in the membrane. When the aeration is made and the air supply is stopped and the membrane is contracted during aeration, the air outlet is sealed to open and close the water body so that the water body does not flow back into the air accommodating part.
또한, 본 발명에서는, 수체의 역류유입을 방지하는 역류방지용 돌기를 포함하여 멤브레인 산기관을 구성하였다. 상기 역류방지용 돌기는, 상기 공기분출구의 주위를 에워싸는 담장형태로 구성되며 공기가 공급되면 팽창되는 상기 멤브레인과 역류방지용 돌기가 서로 이격되면서 공기분출구를 개방시켜서 포기가 이루어지도록 하고, 공기공급이 중단되는 비포기시에는 수축되는 상기 멤브레인이 상기 역류방지용 돌기의 상부 턱에 밀착되어 공기분출구를 밀폐시켜서 공기수용부 내부로 수체가 역류되는 것을 방지하게 된다.In addition, in the present invention, the membrane diffuser was configured by including a backflow preventing projection that prevents the backflow of the water body. The backflow preventing protrusion is configured in the form of a wall surrounding the air outlet, and when the air is supplied, the membrane and the backflow preventing protrusion are expanded to be spaced apart from each other to open the air outlet so that the aeration is made, and the air supply is stopped. During aeration, the contracted membrane is in close contact with the upper jaw of the backflow preventing protrusion to seal the air outlet so as to prevent the water body from flowing back into the air accommodating part.
이와 같이 상기 역류방지용 마개와 돌기에 의하여 비포기시에도 산기관의 내부로 역류가 방지되도록 하였다. As described above, the backflow prevention plug and the projection prevent the backflow into the diffuser even during aeration.
또한, 본 발명에서는, 공기수용부가 수용된 상기 몸체는 2개의 소몸체들을 결합하여 구성할 수 있다. 상기 고정틀과 상기 몸체들을 합성수지로 성형하고 그 내부에 상기 멤브레인을 삽입하고, 상기 소몸체들 중에서 적어도 어느 하나는 상기 고정틀과 서로 융착 결합하여 멤브레인 산기관이 조립되도록 하였다. 여기서 상기 융착 결합은 열융착 결합과 초음파 융착 결합 및 회전융착 결합 중에서 적어도 어느 하나로 이루어질 수 있다.In addition, in the present invention, the body containing the air receiving portion can be configured by combining two small bodies. The fixing frame and the bodies were formed of a synthetic resin and the membrane was inserted therein, and at least one of the small bodies was fused to each other with the fixing frame to assemble the membrane diffuser. Here, the fusion bond may be made of at least one of a thermal fusion bond, an ultrasonic fusion bond, and a rotational fusion bond.
또한, 본 발명에 따른 상기 역류방지 기능이 구비된 멤브레인 산기관의 조립방식은 상기 융착결합에 국한되지 않으며, 나사식 또는 볼트 넛트에 의해 조립되는 종래의 멤브레인 산기관의 조립방식을 적용할 수 있음은 물론이다.In addition, the assembly method of the membrane diffuser with the backflow prevention function according to the present invention is not limited to the fusion coupling, it is possible to apply the conventional assembly method of the membrane diffuser assembled by a screw or bolt nut. Of course.
또한, 본 발명에서의 상기 몸체는, 공기를 공급받을 수 있는 공기공급구 및 공기를 상기 멤브레인으로 분출하는 공기분출구가 함께 구비되고 상기 공기공급구와 공기분출구는 서로 직결되어 공기수용부가 생략된 단순한 형태로 구성할 수 있다. 이에 따라 산기관의 체적이 감소하므로 물류비가 감소되고 반응기의 체류시간도 잠식되지 않으며, 재료의 소요량과 성형 비용 및 부품관리 비용면에서도 경제적이다.In addition, the body of the present invention is provided with an air supply port for receiving air and an air ejection port for ejecting air to the membrane, and the air supply port and the air ejection port are connected to each other in a simple form in which the air accommodating part is omitted. It can be configured as. As a result, the volume of the diffuser is reduced, thereby reducing the logistics cost and not encroaching on the residence time of the reactor.
또한, 본 발명에서는, 보호용 망체를 상기 멤브레인의 외부측 표면으로부터 소정 간격 이격 설치하여 송풍기로부터 공급되는 압축공기에 의하여 멤브레인이 과다 팽창되는 것을 억제시킴으로써 멤브레인의 신축성 저하와 균열 발생 및 파열이 방지되도록 하였다. 상기 보호용 망체는, 수중에 부유하는 목편 등의 부유물 또는 미생물의 부착증식을 위하여 충전된 유동상 담체와의 충돌에 의하여 멤브레인의 파열 및 마모를 방지하는 기능을 겸하게 된다.In addition, in the present invention, by installing a protective mesh spaced apart from the outer surface of the membrane by a predetermined interval to prevent the membrane from over-expanded by the compressed air supplied from the blower to prevent the membrane elasticity degradation, cracking and rupture is prevented . The protective mesh has a function of preventing rupture and abrasion of the membrane by collision with a fluidized carrier which is filled for the attachment of microorganisms or suspended matter, such as a floccule suspended in water.
또한, 본 발명에서는, 상기 보호용 망체를 상기 고정틀과 일체형으로 성형하여 내구성이 우수하고 조립부분이 감소되도록 하였다.In addition, in the present invention, by forming the protective net body integrally with the fixing frame to ensure excellent durability and reduced assembly parts.
전술한 바와 같은 구성을 갖는 본 발명에 따른 역류방지 기능이 구비된 멤브레인 산기관을 하폐수 처리시설의 반응조와 호소와 하천 및 양식장 등에 설치하고 미세한 기포를 방출하고 수중에 산소를 용해시켜서 호기성 미생물을 배양하고 수계의 자정능력을 증대시키며 어패류를 고밀도로 양식할 수 있게 된다.Cultivation of aerobic microorganisms by installing a membrane diffuser with a backflow prevention function according to the present invention having the configuration as described above in the reaction tank and lakes and rivers and fish farms of wastewater treatment facilities, and release microbubbles and dissolve oxygen in water It also increases the self-cleaning ability of the water system and enables high-density farming of fish and shellfish.
또한, 본 발명에 따른 멤브레인 산기관은, 구조적으로 견고하고 기밀성이 우수하며, 구성이 단순하고, 연질 재질인 멤브레인의 손상이 방지되고, 산기관 및 송기관 내부로 수체 및 이물질 등의 역류로 인한 기능저하가 방지되므로, 높은 산소이전율을 안정적으로 유지할 수 있고 유지관리가 용이한 산기관을 제공할 수 있다.In addition, the membrane diffuser according to the present invention is structurally strong and excellent airtightness, simple in construction, preventing damage to the membrane of the soft material, due to the backflow of water bodies and foreign matters into the diffuser and the exhaust pipe Since functional degradation is prevented, it is possible to stably maintain a high oxygen transfer rate and to provide a diffuser that is easy to maintain.
도 1a는 본 발명의 제1실시예에 따른 멤브레인 산기관을 구성하는 구성품들을 나타내는 측단면도.1A is a side cross-sectional view showing components constituting the membrane diffuser according to the first embodiment of the present invention.
도 1b는 본 발명의 제 1실시예에 따른 멤브레인 산기관의 측단면도.1B is a side cross-sectional view of a membrane diffuser in accordance with a first embodiment of the present invention.
도 1c는 본 발명의 제 1실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도.1C is a side sectional view showing operation of the membrane diffuser according to the first embodiment of the present invention.
도 2a는 본 발명의 제2실시예에 따른 멤브레인 산기관을 구성하는 구성품들을 나타내는 측단면도.Figure 2a is a side cross-sectional view showing the components constituting the membrane diffuser according to a second embodiment of the present invention.
도 2b는 본 발명의 제 2실시예에 따른 멤브레인 산기관의 측단면도.2B is a side cross-sectional view of a membrane diffuser in accordance with a second embodiment of the present invention.
도 2c는 본 발명의 제 2실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도.Fig. 2C is a side sectional view showing operation of the membrane diffuser according to the second embodiment of the present invention.
도 3a는 본 발명의 제3실시예에 따른 멤브레인 산기관을 구성하는 구성품들을 나타내는 측단면도.Figure 3a is a side cross-sectional view showing the components constituting the membrane diffuser according to a third embodiment of the present invention.
도 3b는 본 발명의 제 3실시예에 따른 멤브레인 산기관의 측단면도.3B is a side cross-sectional view of a membrane diffuser in accordance with a third embodiment of the present invention.
도 3c는 본 발명의 제 3실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도.3C is a side sectional view showing operation of the membrane diffuser according to the third embodiment of the present invention.
도 4a는 본 발명의 제4실시예에 따른 멤브레인 산기관을 구성하는 구성품들을 나타내는 측단면도.4A is a side cross-sectional view showing components constituting a membrane diffuser according to a fourth embodiment of the present invention.
도 4b는 본 발명의 제 4실시예에 따른 멤브레인 산기관의 측단면도.4B is a side cross-sectional view of a membrane diffuser in accordance with a fourth embodiment of the present invention.
도 4c는 본 발명의 제 4실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도.4C is a side sectional view showing operation of the membrane diffuser according to the fourth embodiment of the present invention.
도 5a는 본 발명의 제5실시예에 따른 멤브레인 산기관을 구성하는 구성품들을 나타내는 측단면도.Figure 5a is a side cross-sectional view showing the components constituting the membrane diffuser according to a fifth embodiment of the present invention.
도 5b는 본 발명의 제 5실시예에 따른 멤브레인 산기관의 종방향 단면도.5B is a longitudinal sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention;
도 5c는 본 발명의 제 5실시예에 따른 멤브레인 산기관의 횡방향 단면도.5C is a transverse cross-sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention.
도 6은 본 발명에 따른 보호용 망체가 구비된 멤브레인 산기관의 측단면도.Figure 6 is a side cross-sectional view of a membrane diffuser with a protective mesh in accordance with the present invention.
도 7은 본 발명에 따른 보호용 망체가 구비된 멤브레인 산기관의 평면도.7 is a plan view of the membrane diffuser with a protective mesh according to the invention.
도 8은 본 발명에 따른 멤브레인 산기관에 보호용 망체가 구비된 모습을 나타내는 사시도.8 is a perspective view showing a state in which a protective mesh is provided in the membrane diffuser according to the present invention.
이하, 본 발명의 바람직한 실시예들을 도면을 참조하여 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
도 1a는 본 발명에 따른 멤브레인 산기관의 제 1실시예를 설명하기 위하여 도시한 구성품들의 측단면도이다.1A is a side cross-sectional view of the components shown to illustrate a first embodiment of a membrane diffuser in accordance with the present invention.
본 발명에 따른 멤브레인 산기관이 조립되기 전에 분리된 상태의 구성품들을 도시한 것으로, 신축성 재질로 이루어지고 복수개의 산기구(50)와 역류 방지용 마개(80)가 형성된 멤브레인(60)과, 하나 이상의 공기공급구(10)가 구비된 제1몸체(41)와, 하나 이상의 공기분출구(20)가 구비된 제2몸체(42)와, 상기 멤브레인이 고정되도록 하는 고정틀(70)을 각각 도시하였다. Before the assembly of the membrane diffuser according to the present invention showing the components in a separated state, made of a stretchable material and formed with a plurality of diffuser 50 and the backflow stopper 80, and at least one A first body 41 having an air supply port 10, a second body 42 having one or more air outlets 20, and a fixing frame 70 for fixing the membrane are illustrated.
상기 고정틀의 내부에 상기 멤브레인과 상기 제2몸체를 순차적으로 삽입하고, 상기 제1몸체와 상기 제2몸체 및 상기 고정틀을 융착 결합시켜서 산기관을 완성할 수 있다. The membrane and the second body may be sequentially inserted into the fixing frame, and the first body, the second body, and the fixing frame may be fusion-bonded to complete the diffuser.
또한, 상기 구성품들은, 상기 제1몸체의 내부에 상기 제2몸체와 상기 멤브레인을 순차적으로 삽입하고, 상기 고정틀과 상기 제1몸체를 서로 고정시키는 순서로 조립될 수 있는 형상으로 성형하고 이러한 순서로 조립할 수 있으며, 본 발명에 따른 멤브레인 산기관은 구성품들의 조립순서가 제한받는 것은 아니다.In addition, the components are molded into a shape that can be assembled in the order of inserting the second body and the membrane into the interior of the first body, and in order to secure the fixing frame and the first body to each other in this order It is possible to assemble, the membrane diffuser according to the present invention is not limited in the assembly order of the components.
또한, 상기 고정틀과 상기 제1몸체에는 서로 대응되는 형상의 나사산과 골을 성형하고 그 내측에 멤브레인과 제2몸체를 삽입하고 나사식으로 결합하거나, 또는 상기 구성품들에는 볼트 삽입구를 형성하고 볼트와 넛트로 조여서 멤브레인 산기관을 조립할 수 있으며, 이하의 모든 실시예 에서도 동일하게 적용할 수 있다. In addition, the fixing frame and the first body to form a thread and the bone of a shape corresponding to each other and insert the membrane and the second body inside and screwed together, or the components to form a bolt insertion hole and the bolt and The nut can be assembled by tightening with a nut, and the same can be applied to all the following examples.
도 1b는 본 발명의 제 1실시예에 따른 멤브레인 산기관의 측단면도이다.1B is a side cross-sectional view of a membrane diffuser in accordance with a first embodiment of the present invention.
본 발명에 따른 멤브레인 산기관의 공기공급구(10)가 송기배관(100)에 연결 설치된 모습을 도시하였으며, 신축성 재질로 이루어지고 복수개의 산기구(50)와 역류방지용 마개(80)가 형성된 멤브레인(60)과, 하나 이상의 공기공급구(10)가 구비된 제1몸체(41)와, 하나 이상의 공기분출구(20)가 구비된 제2몸체(42)에 의하여 그 내부에 공기를 공급받아 분출할 수 있는 공간인 공기수용부(30)가 형성된 몸체(40)가 구성되며, 공기분출구가 역류방지용 마개에 의하여 개폐될 수 있도록 상기 공기분출구와 상기 역류방지용 마개는 서로 대응되는 위치에 배치되어 있다. The air supply port 10 of the membrane diffuser according to the present invention is shown connected to the air supply pipe 100, a membrane made of a stretchable material and formed with a plurality of diffuser 50 and the stopper plug 80 60 is supplied with the air by the first body 41 is provided with at least one air supply port 10, and the second body 42 is provided with at least one air outlet 20 is blown out therein A body 40 having an air accommodating part 30 formed therein, which is a space, is formed, and the air outlet and the countercurrent prevention stopper are arranged at positions corresponding to each other so that the air outlet can be opened and closed by the countercurrent prevention stopper. .
공기가 공급되지 않는 비포기시에는 외부에서 작용하는 수압 또는 상기 멤브레인의 신축성에 의하여 상기 멤브레인(60)이 상기 몸체(40)의 상부 표면과 밀착되면서 공기분출구(20)가 상기 역류 방지용 마개(80)에 의하여 밀폐되므로 수체가 공기수용부(30)와 송기배관(100)으로 역류되지 못하는 수밀한 구성을 나타내고 있다.When no air is supplied, the membrane 60 is in close contact with the upper surface of the body 40 by the hydraulic pressure acting on the outside or the elasticity of the membrane. It is sealed by) and shows a watertight configuration in which the water body does not flow back to the air accommodating part 30 and the air supply pipe 100.
*도 1c는 본 발명의 제 1실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도이다.1C is a side cross-sectional view showing the operation of the membrane diffuser according to the first embodiment of the present invention.
송기배관(100)을 통하여 공기공급구(10)로 압축공기를 공급하면 공기수용부(30) 내부로 유입된 공기가 공기분출구(20)로 고르게 분배되면서 멤브레인(60)의 후면으로 분출된다. 분출된 공기의 압력에 의하여 멤브레인이 팽창하면 역류방지용 마개(80)가 상승하면서 상기 공기분출구가 개방되고 산기구(50)를 통하여 수중에 미세한 기포를 분산시켜서 포기가 이루어지게 된다. When the compressed air is supplied to the air supply port 10 through the air supply pipe 100, the air introduced into the air accommodating part 30 is evenly distributed to the air ejection port 20 and is ejected to the rear surface of the membrane 60. When the membrane expands due to the pressure of the ejected air, the stopper 80 for preventing the flow of the back flows up, and the air ejection opening is opened, and fine air bubbles are dispersed in the water through the diffuser 50 to give up.
공기공급이 중단되면 외부수압과 멤브레인 자체의 수축에 의하여 도 1b에서와 같이 상기 역류 방지용 마개(80)가 공기분출구(20)를 밀폐하게 되므로 상기 공기수용부(30) 및 송기관(100)으로 수체의 역류 유입이 차단될 수 있다. When the air supply is stopped, the reverse flow prevention plug 80 seals the air outlet port 20 as shown in FIG. 1B due to the contraction of the external water pressure and the membrane itself, so that the air accommodating part 30 and the exhaust pipe 100 are closed. Influx of water backflow can be blocked.
상기 고정틀(70)과 제1몸체(41)가 견고하게 서로 융착 결합되고 외부의 영향도 많이 받는 외곽 부분이며 상기 제2몸체(42)는 상기 제1몸체에 의하여 단순히 지지되는 구조이다. 따라서 상기 고정틀과 제1몸체는 서로 융착 결합될 수 있는 재질을 이용하고 상기 제2몸체는 융착이 생략될 수 있는 구조이므로 물성을 서로 다르게 할 수 있다. 예를 들면 외부의 영향을 많이 받는 상기 고정틀과 제1몸체는 상대적으로 고가이나 물성이 우수한 ABS(Acrylonitrile-Butadiene -Styrene) 수지 등으로 성형하고, 내부에 삽입되므로 외부영향이 적은 상기 제2몸체는 PP(Polypropylene), PE(Polyethylene) 등과 같이 상대적으로 저가의 재질로 성형할 수 있으며 다른 실시예에서도 이와 같이 구성할 수 있다. The fixing frame 70 and the first body 41 are fusion-bonded to each other firmly, and the outer part is also affected by a lot of external influences, and the second body 42 is simply supported by the first body. Therefore, since the fixing frame and the first body are made of a material that can be fusion-bonded with each other, and the second body has a structure in which fusion is omitted, physical properties can be different. For example, the fixing frame and the first body, which are greatly influenced by the outside, are molded of ABS (Acrylonitrile-Butadiene-Styrene) resin having relatively high cost and physical properties, and are inserted into the second body. Polypropylene (PP), PE (polyethylene) and the like can be molded in a relatively low-cost material and can be configured in this way in other embodiments.
도 2a는 본 발명에 따른 멤브레인 산기관의 제 2실시예를 설명하기 위하여 도시한 구성품들의 측단면도이다.Figure 2a is a side cross-sectional view of the components shown for explaining the second embodiment of the membrane diffuser according to the present invention.
본 발명에 따른 멤브레인 산기관이 조립되기 전에 분리된 상태의 구성품들을 도시한 것으로, 신축성 재질로 이루어지고 복수개의 산기구(50)가 구비된 멤브레인(60)과, 하나 이상의 공기공급구(10)가 구비된 제1몸체(41)와, 하나 이상의 공기분출구(20)와 역류 방지용 돌기(90)가 형성된 제2몸체(42)와, 상기 멤브레인이 고정되도록 하는 고정틀(70)을 각각 도시하였다. 이 실시예에서도 조립과정과 조립방법 등은 상기 제 1실시예에서와 동일하게 할 수 있다. Before the assembly of the membrane diffuser according to the present invention showing the components in a separated state, made of a flexible material and provided with a plurality of diffusers 50, the membrane 60 and at least one air supply port (10) The first body 41 is provided with, one or more air outlets 20 and the second body 42 is formed with a reverse flow prevention projection 90 and the fixing frame 70 for fixing the membrane, respectively. In this embodiment as well, the assembly process and the assembly method can be the same as in the first embodiment.
도 2b 본 발명의 제 2실시예에 따른 멤브레인 산기관의 측단면도이다.2B is a side cross-sectional view of a membrane diffuser in accordance with a second embodiment of the present invention.
본 발명에 따른 멤브레인 산기관의 공기공급구(10)가 송기배관(100)에 연결 설치된 모습을 도시하였으며, 신축성 재질로 이루어지고 복수개의 산기구(50)가 형성된 멤브레인(60)과, 하나 이상의 공기공급구(10)가 구비된 제1몸체(41)와, 하나 이상의 공기분출구(20)가 구비된 제2몸체(42)에 의하여 그 내부에 공기를 공급받아 분출할 수 있는 공간인 공기수용부(30)가 형성된 하나의 몸체(40)로 구성된 것이다. 상기 제2몸체의 상부 측에는 상기 공기분출구의 주위를 에워싸는 담장형태의 역류방지용 돌기(90)가 구성되어 있다.The air supply port 10 of the membrane diffuser according to the present invention is shown connected to the air supply pipe (100), made of a flexible material and a plurality of membranes 60 formed with a plurality of diffusers 50, and one or more The first body 41 having the air supply port 10 and the second body 42 provided with one or more air outlets 20 are air spaces that are supplied with air therein and are ejected therein. The unit 30 is formed of one body 40 is formed. The upper side of the second body has a fence-type backflow preventing projection 90 surrounding the air outlet is configured.
공기가 공급되지 않는 비포기시에는 외부에서 작용하는 수압 또는 상기 멤브레인의 신축성에 의하여 상기 멤브레인(60)이 상기 몸체(40)의 상부 측에 형성된 역류방지용 돌기(90)와 밀착되면서 공기분출구(20)가 밀폐되므로 수체가 공기수용부(30)와 송기배관(100)으로 수체의 역류 유입이 차단되는 구성을 나타내고 있다.When air is not supplied, the membrane 60 is in close contact with the backflow preventing protrusion 90 formed on the upper side of the body 40 by an external hydraulic pressure or elasticity of the membrane. ) Is sealed so that the water body is blocked from the inflow of the water body back to the air receiving portion 30 and the air supply pipe (100).
도 2c는 본 발명의 제 2실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도이다.2C is a side cross-sectional view showing the operation of the membrane diffuser according to the second embodiment of the present invention.
송기배관(100)을 통하여 공기공급구(10)로 압축공기를 공급하면 공기수용부(30) 내부로 유입된 공기가 공기분출구(20)에 고르게 분배되면서 멤브레인(60)의 후면으로 분출된다. 분출된 공기에 의하여 멤브레인이 팽창하고 상부 측으로 상승하면 상기 역류방지용 돌기(90)와 분리되면서 상기 공기분출구가 개방되므로 산기구(50)를 통하여 수중에 미세한 기포를 분산시켜서 포기가 이루어지게 된다. When compressed air is supplied to the air supply port 10 through the air supply pipe 100, the air introduced into the air accommodating part 30 is evenly distributed to the air ejection port 20 and is ejected to the rear surface of the membrane 60. When the membrane is expanded by the ejected air and ascends to the upper side, the air ejection opening is opened while being separated from the reverse flow preventing projection 90 so that fine air bubbles are dispersed in the water through the diffuser 50 to give up.
공기공급이 중단되면 외부에서 작용하는 수압과 멤브레인 자체의 수축에 의하여 도2b 에서와 같이 멤브레인이 상기 역류방지용 돌기(90)의 상부 측에 밀착되면서 공기분출구(20)를 밀폐하게 되므로 상기 공기수용부(30) 및 송기관(100)으로 수체의 역류 유입이 차단될 수 있다.When the air supply is stopped, the air is closed because the membrane is in close contact with the upper side of the backflow preventing projection 90 as shown in FIG. 2B by the water pressure acting on the outside and the contraction of the membrane itself. Inflow of the water body back to the 30 and the pipe 100 may be blocked.
상기 공기공급구와 대응되는 부분의 상기 멤브레인에는 산기구를 형성하지 않는 것이 바람직하며, 상기 역류방지용 돌기도 신축성이 있는 연질의 재질로 구성하면 수밀성이 개선될 수 있다. It is preferable that no diffuser is formed in the membrane of the portion corresponding to the air supply port, and the backflow preventing protrusion may be formed of a flexible soft material to improve watertightness.
도 3a는 본 발명의 제 3실시예에 따른 멤브레인 산기관의 구성품들을 나타내는 측단면도이다.3A is a side cross-sectional view showing components of a membrane diffuser according to a third embodiment of the present invention.
본 발명에 따른 제 3실시예의 멤브레인 산기관이 완성되기 전에 분리된 상태의 구성품들을 도시한 것으로, 신축성 재질로 이루어지고 복수개의 산기구(50)와 역류방지용 마개(80a)가 형성된 멤브레인(60)과, 하나 이상의 공기공급구(10)가 구비된 몸체(40a)와, 상기 멤브레인이 고정되도록 하는 고정틀(70)을 각각 도시하였다. The components of the membrane diffuser of the third embodiment according to the present invention are shown in a separated state before completion, the membrane 60 made of a stretchable material and formed with a plurality of diffusers 50 and a backflow stopper 80a. And, the body 40a is provided with at least one air supply port 10, and the fixing frame 70 for fixing the membrane, respectively.
상기 고정틀의 내부에 상기 멤브레인을 삽입하고, 상기 몸체와 상기 고정틀을 결합시켜서 산기관을 완성할 수 있으며, 나사 또는 볼트 넛트로 조립하거나, 융착 결합할 수 있다.The membrane may be inserted into the fixing frame, and the body and the fixing frame may be combined to complete the diffuser, and may be assembled with screws or bolt nuts, or may be fusion-coupled.
도 3b는 본 발명의 제 3실시예에 따른 멤브레인 산기관의 측단면도이며, 공기공급구와 공기분출구가 직결됨에 따라 자연스럽게 공기수용부도 생략된 모습을 나타낸다.Figure 3b is a side cross-sectional view of the membrane diffuser according to the third embodiment of the present invention, as the air supply port and the air outlet port is shown as naturally omitted the air receiving portion.
조립이 완료된 멤브레인 산기관의 공기공급구(10)가 송기배관(100)에 연결 설치된 모습을 도시하였으며, 신축성 재질로 이루어지고 복수개의 산기구(50)가 형성된 멤브레인(60)과, 고정틀(70) 및 몸체(40a)로 구성된다. 여기서 상기 몸체(40a)에는 공기공급구(10)와 하나 이상의 공기분출구(20a)가 서로 직접 연통되도록 구성되어 있다. The air supply port 10 of the assembled membrane diffuser is connected to the air supply pipe 100, and the membrane 60 is made of a stretchable material and has a plurality of diffusers 50 formed thereon, and the fixing frame 70 is shown. ) And the body 40a. Here, the body 40a is configured such that the air supply port 10 and one or more air outlets 20a communicate directly with each other.
공기분출구(20a)의 상부측에는 산기구를 생략하는 것이 바람직하며, 공기가 공급되지 않는 비포기시에는 외부에서 작용하는 수압 또는 멤브레인 자체의 수축에 의하여 멤브레인(60)이 몸체(40a)의 표면과 밀착되면 역류방지용 마개(80a)에 의하여 상기 공기분출구(20a)가 밀폐되므로 수체가 송기배관(100)으로 역류되지 않게 된다.It is preferable to omit the air diffuser on the upper side of the air outlet port 20a, and when the aerosol is not supplied with air, the membrane 60 may be in contact with the surface of the body 40a by water pressure acting on the outside or contraction of the membrane itself. When the air outlet 20a is sealed by the backflow preventing plug 80a, the water body does not flow back into the air supply pipe 100 when it is in close contact.
상기 공기공급구(10)는 상기 멤브레인의 하부측 표면으로 공기를 직접 분출할 수 있도록 상기 공기분출구(20a)와 직접 연통되도록 구성되며 이에 따라 공기수용부가 생략되므로 몸체가 단순한 구조이다.The air supply port 10 is configured to be in direct communication with the air ejection opening 20a to directly eject the air to the lower surface of the membrane, and thus the air receiving portion is omitted, so the body is simple.
도 3c는 본 발명의 제 3실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도이다.3C is a side cross-sectional view showing the operation of the membrane diffuser according to the third embodiment of the present invention.
송기배관(100)을 통하여 공기공급구(10)로 압축공기를 공급하면 공기분출구(20a)에서 직접 멤브레인(60)의 후면으로 공기가 분출된다. 분출된 공기에 의하여 멤브레인이 팽창하면 역류방지용 마개(80a)가 상부 측으로 상승하여 상기 공기분출구(20a)가 열리게 되고 산기구(50)를 통하여 수중에 미세한 기포를 분산시켜서 포기가 이루어지게 된다. When compressed air is supplied to the air supply port 10 through the air supply pipe 100, air is ejected from the air outlet 20a directly to the rear surface of the membrane 60. When the membrane is expanded by the ejected air, the reverse flow prevention plug 80a rises to the upper side to open the air ejection opening 20a and disperse fine bubbles in the water through the diffuser 50 to give up.
상기 공기분출구(20a)를 중심으로 상기 몸체(40a)의 상부면에 줄홈(미도시)을 형성하면, 상기 줄홈을 통하여 압축공기가 이동하면서 멤브레인의 후면부에 공기가 고르게 공급되므로 멤브레인 전체에서 고르게 기포가 분산될 수 있다. 상기 줄홈은 나선형, 격자형 또는 방사상 등과 같은 형상으로 배치할 수 있다.If a groove (not shown) is formed on the upper surface of the body 40a around the air outlet 20a, the air is evenly supplied to the rear surface of the membrane while the compressed air moves through the rope groove, so that air bubbles are evenly distributed throughout the membrane. Can be dispersed. The row groove may be arranged in a shape such as spiral, lattice or radial.
도 4a는 본 발명의 제 4실시예에 따른 멤브레인 산기관의 구성품들을 나타내는 측단면도이다.4A is a side cross-sectional view showing components of a membrane diffuser according to a fourth embodiment of the present invention.
본 발명에 따른 제 4실시예의 멤브레인 산기관이 결합되기 전에 분리된 상태의 구성품들을 도시한 것으로, 신축성 재질로 이루어지고 복수개의 산기구(50)가 형성된 멤브레인(60)과, 하나 이상의 공기공급구(10)가 구비된 몸체(40a)와, 상기 멤브레인이 고정되도록 하는 고정틀(70)을 각각 분리하여 도시하였다. 상기 몸체의 상부 측에는 상기 공기분출구의 주위를 에워싸는 담장형태의 역류방지용 돌기(90a)가 구성되어 있다. The components in the separated state before the membrane diffuser of the fourth embodiment according to the present invention are shown. The membrane 60 is made of an elastic material and has a plurality of diffusers 50 formed therein, and at least one air supply port. The body 40a provided with the 10 and the fixing frame 70 for fixing the membrane are shown separately. The upper side of the body has a fence-shaped backflow prevention projection (90a) surrounding the air outlet is configured.
상기 고정틀의 내부에 상기 멤브레인을 삽입하고, 상기 몸체와 상기 고정틀을 결합시켜서 산기관을 완성할 수 있으며, 나사 또는 볼트 넛트로 조립하거나, 융착 결합할 수 있다.The membrane may be inserted into the fixing frame, and the body and the fixing frame may be combined to complete the diffuser, and may be assembled with screws or bolt nuts, or may be fusion-coupled.
도 4b는 본 발명의 제 4실시예에 따른 멤브레인 산기관의 측단면도이며, 공기공급구와 공기분출구가 직결됨에 따라 자연스럽게 공기수용부가 생략된 모습을 나타낸다.Figure 4b is a side cross-sectional view of the membrane diffuser according to the fourth embodiment of the present invention, showing the appearance that the air accommodating part is naturally omitted as the air supply port and the air outlet port is directly connected.
조립이 완료된 멤브레인 산기관의 공기공급구(10)가 송기배관(100)에 연결 설치된 모습을 도시하였으며, 신축성 재질로 이루어지고 복수개의 산기구(50)가 형성된 멤브레인(60)과, 고정틀(70) 및 몸체(40a)로 구성된다. 여기서 상기 몸체(40a)에는 공기공급구(10)와 하나 이상의 공기분출구(20a)가 서로 직접 연통되도록 구성되어 있다. The air supply port 10 of the assembled membrane diffuser is connected to the air supply pipe 100, and the membrane 60 is made of a stretchable material and has a plurality of diffusers 50 formed thereon, and the fixing frame 70 is shown. ) And the body 40a. Here, the body 40a is configured such that the air supply port 10 and one or more air outlets 20a communicate directly with each other.
공기가 공급되지 않는 비포기시에는 외부에서 작용하는 수압 또는 멤브레인 자체의 수축에 의하여 멤브레인(60)이 상기 역류방지용 돌기(90a)의 상단에 밀착되면서 상기 공기분출구(20a)가 밀폐되므로 송기배관(100)으로 수체의 역류 유입이 차단된다. 이 실시예에서도 제 2실시예에서와 같이 상기 공기공급구와 대응되는 부분의 상기 멤브레인에는 산기구를 형성하지 않는 것이 바람직하며, 상기 역류방지용 돌기도 신축성이 있는 연질의 재질로 구성하면 수밀성이 개선될 수 있다.When the air is not supplied, the air outlet 20a is sealed while the membrane 60 is in close contact with the upper end of the backflow preventing protrusion 90a by water pressure acting on the outside or contraction of the membrane itself. 100) to block backwater inflow. In this embodiment, as in the second embodiment, it is preferable that no diffuser is formed in the membrane of the portion corresponding to the air supply port, and the backflow preventing protrusion can be improved in watertightness by using a flexible soft material. Can be.
이 실시예에서도 상기 공기공급구(10)는 상기 멤브레인의 하부측 표면으로 공기를 직접 분출할 수 있도록 상기 공기분출구(20a)와 직접 연통되도록 구성되며 이에 따라 공기수용부가 생략되므로 몸체가 단순한 구조이다.In this embodiment, the air supply port 10 is configured to be in direct communication with the air ejection opening 20a so as to directly eject the air to the lower surface of the membrane, and thus the air receiving portion is omitted, so the body is simple. .
도 4c는 본 발명의 제 4실시예에 따른 멤브레인 산기관의 작동을 나타내는 측단면도이다.4C is a side sectional view showing operation of the membrane diffuser according to the fourth embodiment of the present invention.
송기배관(100)을 통하여 공기공급구(10)로 압축공기를 공급하면 공기분출구(20a)에서 직접 멤브레인(60)의 후면으로 공기가 분출된다. 분출된 공기에 의하여 멤브레인이 팽창하여 상부측으로 상승하면 상기 역류방지용 돌기(90a)와 분리되면서 상기 공기분출구가 개방되므로 산기구(50)를 통하여 수중에 미세한 기포를 분산시켜서 포기가 이루어지게 된다. When compressed air is supplied to the air supply port 10 through the air supply pipe 100, air is ejected from the air outlet 20a directly to the rear surface of the membrane 60. When the membrane expands and rises to the upper side by the ejected air, the air ejection opening is opened while being separated from the backflow preventing protrusion 90a, thereby dispersing fine bubbles in the water through the diffuser 50 to give up.
상기 공기분출구(20a)를 중심으로 상기 몸체의 상부면에도 제 3실시예에서와 같이 줄홈(미도시)을 형성하면, 멤브레인의 후면부에 공기가 고르게 공급될 수 있다.If a groove (not shown) is formed on the upper surface of the body around the air outlet 20a as in the third embodiment, air can be evenly supplied to the rear surface of the membrane.
또한, 본 발명에 따른 제 1 내지 제 4실시예에 따른 멤브레인 산기관은 예시한 바와 같은 원판형에 국한되지 않고 정사각형, 장방형, 다각형, 타원형 등의 형상으로 제한 없이 구성할 수 있다.In addition, the membrane diffuser according to the first to fourth embodiments according to the present invention can be configured without limitation to the shape of a square, a rectangle, a polygon, an ellipse and the like, without being limited to the disc shape as illustrated.
*도 5a는 본 발명에 따른 멤브레인 산기관의 제 5실시예를 설명하기 위하여 도시한 구성품들의 측단면도이다.5A is a cross-sectional side view of the components shown to illustrate a fifth embodiment of a membrane diffuser in accordance with the present invention.
본 발명에 따른 멤브레인 산기관이 조립되기 전에 분리된 상태의 구성품들을 도시한 것으로, 신축성 재질로 이루어지고 복수개의 산기구(50)와 역류 방지용 마개(80)가 형성된 튜브형의 멤브레인(60)과, 하나 이상의 공기공급구(10)와 공기분출구(20)가 구비된 관상형의 몸체(40)와, 상기 멤브레인이 고정되도록 하는 고정틀(70,70a)을 각각 도시하였다. Before the assembly of the membrane diffuser according to the present invention showing the components in a separated state, made of a flexible material and a tubular membrane 60 formed with a plurality of diffusers 50 and the backflow stopper 80, The tubular body 40 is provided with at least one air supply port 10 and an air outlet port 20, and fixing frames 70 and 70a for fixing the membrane, respectively.
상기 멤브레인의 내부에 몸체를 삽입하고, 상기 고정틀로 멤브레인을 고정 및 결합시켜서 관상형의 멤브레인 산기관을 완성할 수 있다. A body may be inserted into the membrane and the tubular membrane diffuser may be completed by fixing and coupling the membrane with the fixing frame.
도 5b는 본 발명의 제 5실시예에 따른 멤브레인 산기관의 종방향 단면도이다.5B is a longitudinal cross-sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention.
본 발명에 따른 멤브레인 산기관의 공기공급구가 송기배관(100)에 연결 설치된 모습을 도시하였으며, 신축성 재질로 이루어지고 복수개의 산기구(50)와 역류방지용 마개(80)가 형성된 튜브형 멤브레인(60)의 내부에 공기공급구(10)와 공기분출구(20)가 구비된 관상형 몸체(40)가 삽입되고 양측 끝은 고정틀(70,70a)로 고정시킨 구성이며 그 내부에는 공기를 공급받아 분출할 수 있는 공간인 공기수용부(30)가 형성되어 있다. 이와 같이 관상형의 몸체로 산기관을 구성함에 따라 2개 이상 소몸체들을 결합하지 않고서도 그 내부에 공기수용부를 구성할 수 있게 된다. The air supply port of the membrane diffuser according to the present invention is shown connected to the air supply pipe (100), made of a stretchable material and formed of a plurality of diffusers 50 and the stopper plug 80 is formed of a tubular membrane (60) The tubular body 40 having an air supply port 10 and an air ejection port 20 is inserted into the inside thereof, and both ends are fixed with fixing frames 70 and 70a. The air accommodating part 30 which is a space which can be formed is formed. Thus, by configuring the diffuser with a tubular body, it is possible to configure the air accommodating portion therein without combining two or more small bodies.
공기분출구가 역류방지용 마개에 의하여 개폐될 수 있도록 상기 공기분출구와 상기 역류방지용 마개는 서로 대응되는 위치에 배치되어 있으며 공기가 공급되지 않는 비포기시에는 외부에서 작용하는 수압 또는 상기 멤브레인의 신축성에 의하여 상기 멤브레인(60)이 상기 몸체(40)의 상부 표면과 밀착되면서 공기분출구(20)가 상기 역류 방지용 마개(80)에 의하여 밀폐되므로 역류방지 기작은 제 1실시예와 같다. The air outlet and the counter flow stopper are disposed at positions corresponding to each other so that the air outlet can be opened and closed by the counter flow stopper. When the air is not supplied, the water outlet or the elasticity of the membrane may be applied. Since the membrane 60 is in close contact with the upper surface of the body 40, the air outlet 20 is sealed by the backflow preventing plug 80, so that the backflow preventing mechanism is the same as in the first embodiment.
또한 이 실시예 에서와 같은 관상형의 멤브레인 산기관에도 제 3 내지 제 4실시예 에서와 같이 상기 공기분출구(20)의 주위에 역류방지용 돌기를 구성할 수 있다.In addition, in the tubular membrane diffuser as in this embodiment, as in the third to fourth embodiments, a backflow preventing protrusion may be formed around the air outlet port 20.
도 5c는 본 발명의 제 5실시예에 따른 멤브레인 산기관의 횡방향 단면도이다.5C is a transverse cross-sectional view of a membrane diffuser in accordance with a fifth embodiment of the present invention.
이 실시예에서의 관상형의 멤브레인 산기관은 그 단면을 원형으로 구성하였으나 이에 국한되지 않으며, 관상형의 멤브레인 산기관의 횡방향 측단면 형상은 타원형, 장방형, 판상형 등으로 다양하게 제한 없이 구성될 수 있다. 상기 공기수용부(30)가 타원형, 장방형, 좁고 긴 슬릿형으로 이루어지도록 몸체(40)를 성형하고 신축성의 멤브레인 내부에 상기 몸체를 삽입함으로써 이러한 다양한 형태의 멤브레인 산기관들을 실현할 수 있다. The tubular membrane diffuser in this embodiment is configured to have a circular cross section, but is not limited thereto, and the transverse side cross-sectional shape of the tubular membrane diffuser can be configured without various limitations such as oval, rectangular, and plate. Can be. These various types of membrane diffusers can be realized by shaping the body 40 so that the air receiving portion 30 has an elliptical, rectangular, narrow and long slit shape and inserting the body into the elastic membrane.
도 6은 본 발명에 따른 보호용 망체가 구비된 멤브레인 산기관의 측단면도이다.Figure 6 is a side cross-sectional view of a membrane diffuser with a protective mesh in accordance with the present invention.
송풍기의 초기 작동 또는 송기배관에서 공기 배분의 불균형 등으로 일부 산기관으로 과다하게 공기공급량이 편중되면 이로 인하여 멤브레인이 과다 팽창하여 산기구가 확대되므로 산소이전율이 저하되거나 균열의 발생 또는 멤브레인 자체가 파열될 수 있다.If the air supply is excessively biased to some diffusers due to the initial operation of the blower or the unbalance of air distribution in the blower pipe, this causes the membrane to overexpand and expand the diffuser, resulting in lower oxygen transfer rate or cracking or rupture of the membrane itself. Can be.
따라서 상기 멤브레인(60)의 외부측 표면의 상부에 보호용 망체(71)를 소정 간격으로 이격시켜서 설치하고, 상기 보호용 망체에 의하여 멤브레인의 과다 팽창을 억제하여 멤브레인의 신축성이 저하되거나 파열되는 것을 방지할 수 있다. 예를 들면 상기 멤브레인과 상기 보호용 망체의 이격거리를 20mm로 할 경우 20mm 이상을 과다하게 초과하여 상기 멤브레인이 상부로 팽창하는 것을 억제할 수 있게 된다. Therefore, the protective mesh 71 is installed on the upper surface of the outer surface of the membrane 60 at predetermined intervals, and the expansion of the membrane is suppressed by the protective mesh to prevent the elasticity of the membrane from being lowered or broken. Can be. For example, when the separation distance between the membrane and the protective mesh is 20 mm, it is possible to suppress the expansion of the membrane upward by exceeding 20 mm or more.
또한, 상기 보호용 망체(71)를 상기 고정틀(70)과 일체로 성형하면 연결부위가 견고하고 구성품의 수량이 감소되며 조립공정도 단순하게 할 수 있다. In addition, when the protective mesh 71 is integrally formed with the fixing frame 70, the connection part is firm, the quantity of components is reduced, and the assembly process can be simplified.
또한, 본 발명에 따른 보호용 망체는 상기 도 6에 도시된 원판형(Disc type)의 멤브레인 산기관에 국한되지 않고 본 발명에 따른 관상형의 멤브레인 산기관은 물론 모든 실시예에서 적용될 수 있다.Further, the protective net according to the present invention is not limited to the disc type membrane diffuser shown in FIG. 6, but may be applied to all embodiments as well as the tubular membrane diffuser according to the present invention.
도 7은 본 발명에 따른 멤브레인 산기관의 평면도이다.7 is a plan view of a membrane diffuser in accordance with the present invention.
고정틀(70)에 연결 설치된 방사상형의 보호용 망체(71)의 하부에 멤브레인(60)이 설치되어 외부충격으로부터 보호될 수 있는 형상을 나타내고 있다. 상기 보호용 망체는 격자형, 벌집형 등 멤브레인을 보호하고 과다 팽창을 억제하며 기포가 유통될 수 있는 구조이면 제한 없이 적용될 수 있다.The membrane 60 is installed on the lower portion of the radial protective mesh 71 installed in the fixing frame 70 to be protected from external shock. The protective net can be applied without limitation as long as it protects the membrane, such as lattice, honeycomb structure, inhibits over-expansion, and bubbles can flow.
도 8은 본 발명에 따른 멤브레인 산기관에 보호용 망체가 구비된 모습을 나타내는 사시도이다.8 is a perspective view showing a state in which a protective mesh is provided in the membrane diffuser according to the present invention.
보호용 망체가 구비된 본 발명에 따른 멤브레인 산기관의 형상에 대한 이해를 돕기 위하여 멤브레인 산기관의 하부에 공기공급구(10)가 구비되고, 몸체(40)와 보호용 망체(71), 고정틀(70) 및 보호용 망체 하부에 멤브레인(60) 등을 보여주는 외관을 나타낸 것이다.In order to help the understanding of the shape of the membrane diffuser according to the present invention with a protective mesh is provided with an air supply port 10 in the lower portion of the membrane diffuser, the body 40 and the protective mesh 71, the fixing frame 70 ) And the outer surface showing the membrane 60 and the like under the protective mesh.
이상에서, 본 발명은 실시예 및 첨부도면에 기초하여 상세히 설명되었다. 그러나, 이상의 실시예들 및 도면에 의해 본 발명의 범위가 제한되지 않으며, 본 발명의 범위는 후술한 특허청구범위에 기재된 내용에 의해서만 제한될 것이다.In the above, the present invention has been described in detail based on the embodiment and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

Claims (6)

  1. 하나 이상의 공기공급구와 공기분출구가 구비된 몸체;A body having one or more air inlets and an air outlet;
    신축성 재질로 이루어지고 복수의 산기구가 형성된 멤브레인;A membrane made of an elastic material and having a plurality of diffusers formed therein;
    상기 멤브레인이 상기 몸체에 고정되도록 하는 고정틀; 및A fixing frame to fix the membrane to the body; And
    상기 멤브레인의 내부 표면의 상기 공기분출구에 대응되는 위치에 형성되고 상기 공기분출구를 개폐하는 역류방지용 마개;를 포함하고,And a backflow prevention stopper formed at a position corresponding to the air outlet of the inner surface of the membrane to open and close the air outlet.
    상기 역류방지용 마개는, 상기 공기공급구로 공기가 공급되면 상기 멤브레인이 팽창되면서 상기 공기분출구를 개방하고, 공기의 공급이 중단되면 상기 멤브레인이 수축되면서 상기 공기분출구를 밀폐하여 수체의 역류를 방지하는 역류방지 기능을 갖는 멤브레인 산기관.The backflow prevention plug, when the air is supplied to the air inlet opening the air outlet as the membrane is expanded, and when the supply of air is stopped, the membrane is contracted while the air outlet is closed to prevent the backflow of the water body Membrane diffuser with prevention function.
  2. 하나 이상의 공기공급구와 공기분출구가 구비되된 몸체;A body having at least one air supply port and an air outlet port;
    신축성 재질로 이루어지고 복수의 산기구가 형성된 멤브레인;A membrane made of an elastic material and having a plurality of diffusers formed therein;
    상기 멤브레인이 상기 몸체에 고정되도록 하는 고정틀; 및A fixing frame to fix the membrane to the body; And
    상기 공기분출구를 둘러싸는 형상으로 형성되고 상기 공기분출구를 개폐하는 역류방지용 돌기;를 포함하고,And a backflow preventing protrusion formed in a shape surrounding the air outlet and opening and closing the air outlet.
    상기 역류방지용 돌기는, 상기 공기공급구로 공기가 공급되면 상기 멤브레인이 팽창되면서 상기 역류방지용 돌기의 상부와 이격되어 상기 공기분출구를 개방하고, 공기의 공급이 중단되면 상기 멤브레인이 수축되면서 상기 역류방지용 돌기의 상부와 밀착됨으로써 상기 공기분출구를 밀폐하여 수체의 역류를 방지하는 역류방지 기능을 갖는 멤브레인 산기관.The backflow preventing protrusion is spaced apart from an upper portion of the backflow preventing protrusion as the membrane expands when air is supplied to the air supply opening, and opens the air outlet port, and when the supply of air is stopped, the membrane contracts and the backflow preventing protrusion Membrane diffuser having a backflow prevention function to close the air outlet by being in close contact with the upper portion of the water body to prevent backflow of the water body.
  3. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 멤브레인의 외부 표면으로부터 이격되어 배치되고, 상기 멤브레인의 과도한 팽창을 억제하여 신축성이 저하되거나 파열되는 것을 방지하며 외부 충격으로부터 상기 멤브레인을 보호하는 보호용 망체;를 더 포함하는 역류방지 기능을 갖는 멤브레인 산기관.A membrane mesh disposed further away from the outer surface of the membrane, a protective mesh for inhibiting excessive expansion of the membrane to prevent degradation or rupture and protecting the membrane from external impact; Agency.
  4. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 몸체는 제1몸체와 제2몸체로 이루어지고, 상기 제1몸체와 상기 제2몸체 사이에는 공기수용부가 형성된 역류방지 기능을 갖는 멤브레인 산기관.The body is composed of a first body and a second body, the membrane diffuser having a backflow prevention function formed between the first body and the second body air receiving portion.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 고정틀과 제1몸체 및 제2몸체 중에서 적어도 어느 2개는 서로 융착 결합되어 이루어진 역류방지 기능을 갖는 멤브레인 산기관.At least two of the fixing frame and the first body and the second body is a membrane diffuser having a backflow prevention function formed by fusion bonding.
  6. 제3항에 있어서,The method of claim 3,
    상기 보호용 망체는, 상기 고정틀과 일체로 성형된 역류방지 기능을 갖는 멤브레인 산기관.The protective mesh is a membrane diffuser having a backflow prevention function integrally formed with the fixing frame.
PCT/KR2011/000853 2010-11-11 2011-02-09 Membrane diffuser having counterflow prevention function WO2012063995A1 (en)

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