KR102382198B1 - Submersible Aerator - Google Patents

Abstract

This invention discloses an underwater aeration apparatus.
The disclosed underwater aeration device further includes an air diffusion and air vortex configuration in addition to the agitating diffuser and air supply configuration, so that air bubbles are always spread quickly and uniformly throughout the wastewater of the reactor, and a high oxygen dissolution rate can be maintained in the wastewater. It's about providing what you have.

Description

Submersible Aerator

The present invention relates to an underwater aeration apparatus used for purification treatment of domestic sewage, livestock and industrial wastewater (hereinafter referred to as 'wastewater').

In particular, for the purpose of increasing the oxygen dissolution rate in the wastewater of the reaction tank, the oxygen dissolution rate in the reaction tank is reduced by adding an air diffusing chamber and air vortex function to the stirring aeration function and the air supply function so that the air transfer is diffused throughout the reaction tank. It relates to an underwater aeration device that made it possible to raise it.

In general, an underwater aeration device is equipped with a diffusion function and agitating function, and is installed in the water to disperse the air compressed by the blower into small bubbles, and mix and stir the reaction solution. am.

In other words, it can be used as a 'underwater agitator for both aerobic and anaerobic functions' that separates the control factors of 'air supply function' and 'agitator function'. It makes it convenient to select a treatment system such as a batch type, and the division of the control factor (power source) makes it convenient to save energy even in the case of changes in water treatment conditions or change of treatment method, as well as an air supply function or agitation diffuser function depending on the situation or purpose One or both can be arbitrarily controlled at the same time to give an appropriate additional function even for large load fluctuations, and patents for this are published in the following documents.

Patent Document 1 states, 'Air is injected from the inside and outside of the underwater aeration device, respectively, and the injected air is sprayed in a fine state, so that the oxygen contained in the air is brought into efficient gas-liquid contact with the water, so that the same power It is to provide an underwater aeration device capable of increasing the efficiency of the underwater aeration device while using a main body comprising an impeller installed to circulate water by sucking water through the lower portion of the casing and discharging it through the spout, and a motor for rotating the impeller; an air inlet pipe installed so that air is primarily introduced from the inner center of the casing so that air can be diffused inside the body; and a branch pipe branching from the air inlet pipe, and a space in which the outlet of the branch pipe can be located is installed to be formed along the lower outer peripheral surface of the casing, and fine holes are formed on the surface to be introduced into the space and an air chamber installed so that air is additionally injected as microbubbles through the micropores.'

Patent Document 2 relates to an underwater aeration apparatus equipped with a stirring function for stirring a water body and an aeration function for supplying oxygen to the water, while 'a rotor blade is installed on the rotating shaft of the driving motor, and the air supplied from the blower is A diffuser having an aeration port is installed on one or both sides of the rotating shaft so as to be diffused by the water flow generated by the rotor blade, and the diffuser communicates with the outlet of the blower through the air pipe, and the driving motor is attached to the casing. In the installed underwater aeration apparatus, the air diffuser is installed to be fixed separately from the rotation shaft, thereby stabilizing the aeration efficiency and reducing mechanical defects; The casing is composed of two layers of skins to form a space through which air can communicate therein, and at least one of the two layers of skins is provided with an air diffuser (diffusion pipe) or an air diffuser hole is formed, so that the casing itself has an air diffusion function This additionally is provided so that the aeration capacity can be increased.'

Patent Document 3 relates to an underwater aeration apparatus for aeration and agitation of a reaction solution in wastewater treatment, while "in the underwater aeration apparatus consisting of a driving part, a rotor blade, a diffuser means, and a casing, the casing comprises a detachable protrusion and a removal It is composed of an upper casing and a lower casing provided with coupling means such as a wear receiving part, so that the upper casing in which the driving part and the rotor are installed can be easily separated from the lower casing and lifted. While the diffuser is configured to be long to act as a support to protect the diffuser, the diffuser is composed of a diffuser equipped with a spacer at the lower part to keep the spacing between the slit-type diffusers constant, thereby reducing the capacity of the lifting crane. Facility cost is economical, maintenance and repair are easy, aeration efficiency is stable, and device reliability is excellent.'

However, in the underwater aeration device of the prior art, the water flow generated by the impeller inside the casing flows radially through the space between the casing and the impeller (diffuser), and disperses the air flowing out from the periphery of the impeller into small bubbles to form the outlet of the casing. It is a configuration in which it is delivered to the inside of the reactor through

This configuration has a problem in that the air pressure is weakened, which prevents the air pressure from being evenly distributed throughout the reaction tank, and this problem only increases the power of the agitator motor that executes the agitation diffuser action compared to the amount of air inputted. Otherwise, it results in an increase in only the amount of air flow, causing unnecessary power wastage.

In addition, the weakening of the air pressure lowers the oxygen dissolution rate in the wastewater of the reactor by weakening the air transfer efficiency, thereby causing a serious problem of weakening the purification ability of the wastewater.

Therefore, there is an urgent need for the development of an underwater aeration device that can increase the oxygen dissolution rate in wastewater by uniformly spreading the delivery of air throughout the reaction tank.

KR registration number 10-1125133 KR Publication No. 10-2007-0017429 KR Publication No. 10-2007-0045170

The present invention was developed to supplement the problems of the prior art and provide various additional advantages. In addition to the stirring diffuser and air supply configuration, the present invention further adds air diffusion and air vortex configuration to the entire reaction tank to produce uniform air bubbles at all times. An object of the present invention is to provide an underwater aeration device capable of maintaining a high oxygen dissolution rate in the reaction tank by diffusion.

The above object is achieved by an underwater aeration device provided according to the present invention.

The underwater aeration device provided according to an aspect of the present invention is installed radially from the upper part of the body and the hollow body part having an opening part formed with an opening part to be opened to a reaction tank in which wastewater is accommodated, so that the reactor tank and the opening part are connected. a casing provided with a plurality of spouts; an air diffuser having wings positioned inside the body of the casing and installed to be driven by a submersible deceleration motor to aerate and agitate the wastewater absorbed through the opening, and then eject the wastewater into the reactor through the spouts; an air inlet pipe which is supported in a state of being in contact with the air supply pipe at the lower part of the air diffuser and supplies air to the mixed pressure liquid that is aerated and stirred by the air diffuser rotor; It is installed in a ring shape on the upper or lower part of the outer peripheral surface of the body of the casing at a position spaced apart from the air inlet pipe, is connected to the air supply pipe by a connecting pipe, and is formed by a plurality of air diffusion holes formed inside or outside an air diffusion pipe that allows the air blown from the air pipe to be diffused into the reaction tank; and a vortex in the form of an inclined groove to be installed at regular intervals along the entire circumference of the inner circumferential surface of the body of the casing and to quickly guide and discharge the mixed pressure liquid in the vortex form generated by the diffuser to the plurality of spouts. means; the blade attached to the air diffuser is formed into a streamlined body to increase the flow rate of treated water and to increase bubble diffusion and discharge, and a plurality of streamlined protrusions are installed on the surface of the streamlined body, and The connection pipe is characterized in that it is configured to be smaller than the diameter of the air diffusion pipe and the air supply pipe.

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According to the present invention, even with the motor power and air supply of the same capacity as in the prior art, air bubbles are uniformly diffused throughout the reaction tank at all times, and the effect of remarkably improving the purification treatment capability of wastewater by maintaining a high oxygen dissolution rate in the wastewater of the reaction tank at all times to give

1 is a view showing the overall configuration of an underwater abandonment apparatus according to an embodiment of the present invention;
2 is an enlarged view showing only part 'A' in FIG. 1,
3 is an enlarged view showing only the 'body part 114' of FIG.
Figure 4 is an enlarged lateral cross-sectional view of the wing portion of Figure 1,
5 is a view showing another example of the underwater abandonment apparatus according to the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In addition, the terms used in the specification of the present invention are for the purpose of describing embodiments and are not intended to limit the present invention, and the singular includes the plural unless specifically stated in the text. As used herein, 'comprises' and/or 'comprising' does not exclude the presence or addition of one or more other components other than the stated components, and unless otherwise defined, the specification of the present invention All terms used in the present invention may be used in a meaning that can be commonly understood by those of ordinary skill in the art to which the present invention pertains. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

Hereinafter, a more preferred embodiment of the underwater aeration device according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a view showing the overall configuration of the underwater abandonment apparatus according to the present invention, Figure 2 is an enlarged view showing only the portion 'A' in Figure 1 separated.

As shown in the drawings, the underwater aeration apparatus 100 according to the present invention is a standard type, and the hollow body with an opening 112 positioned to be accommodated in the reaction tank 10 in which the wastewater is accommodated is formed. A casing 110 having a plurality of spouts 116 that are integrally installed radially from the upper part of the part 114 and the body part 114 to connect the reaction tank 10 and the opening part 112 to each other. contains

A diffuser that allows wastewater sucked in through the opening 112 into the inside of the body 114 of the casing 110 to be ejected into the inside of the reactor 10 through the spout 116 . A rotor 120 having blades 122 for agitation and agitation was mounted and driven by a submersible deceleration motor 126 installed on the upper portion of the casing 110 . The casing 110 to which the underwater deceleration motor 126 is mounted can be stably fixed to the bottom of the reactor 10 by a plurality of support angles 115 installed under the casing 110 . .

As shown in the drawing, the lower portion of the casing 110 is fixedly supported by the air supply pipe 150a and the support pipe 150b installed vertically from the reaction tank 10, and the wings 122 enter the diffuser rotor 120 inside. ), an air inlet pipe 130 for supplying oxygen to the agitated wastewater and the aeration by the air was installed. The air input pipe 130 is fixed to the air supply pipe 150a and the support pipe 150b, but is connected in communication with the air supply pipe 150a and blows from the air blowing pipe 150a by a blower (not shown). After passing through the air inlet pipe 130, the air is discharged to the inside of the aerator 120 through an air outlet 132 installed vertically in the central part of the air inlet pipe 130, 120) through the air blowing hole 125 installed in the reactor 10 was discharged into the interior.

As shown in the drawing, an air diffusion pipe (Air Diffusing Chamber) 140 separate from the air inlet pipe 130 was installed at a position spaced upward from the air inlet pipe 130 . The air diffusion tube 140 is formed of a tube having a predetermined diameter in a ring shape, and the air diffusion tube 140 is positioned to surround the circumference of the body 114 of the casing 110, By a configuration fixed to the air supply pipe 150a and the support pipe 150b but communicated with the air supply pipe 150a, the air blown from the air supply pipe 150a is quickly discharged to the air diffusion pipe 140 through the air diffusion pipe 140 . In addition, the air introduced into the air diffusion pipe 140 passes through the air diffusion holes 142 perforated at regular intervals along the inner circumferential direction of the air diffusion tube 140 through the casing 110 . Oxygen that contributes to the purification of wastewater in the entire wastewater accommodated in the reactor by giving air pressure necessary to rapidly diffuse the bubble mixture discharged from the spouts 116 toward the reaction tank to the entire interior of the reaction tank 10 The dissolution rate was increased.

In addition, in order for the air to be blown from the air supply pipe 150a to be rapidly sent to the air diffusion pipe 140 side, the air diffusion pipe 140 and the connecting pipe 144 of the air supply pipe 150a are connected to the air diffusion pipe 140 . It is preferable to configure the pipe 140 and the vent pipe 150a with different diameters.

Although the embodiment shows that the air diffusion hole 142 is installed along the inner side of the air diffusion pipe 140 as an example, it can be installed outside the air diffusion tube 140, or both inside and outside. It will be understood from the drawings of the above embodiment that it can be installed.

As shown in the drawings, vortex inducing means 118 in the form of inclined grooves or protrusions at regular intervals are provided on the entire circumference of the inner peripheral surface of the body 114 of the casing 110 .

A detailed configuration for this is shown in FIG. 3 . As shown in FIG. 3 , on the inner circumferential surface of the body 114 of the casing 110 , that is, on the inner circumferential surface of the body 114 facing the wings 122 of the air diffuser 120 , the inner circumferential surface of the body 114 faces upward. A vortex inducing means 118 in the form of a photo groove is installed in a state in which it is connected to the outlets 116, and the bubble mixture generated by the acid rotor 120 is passed through the outlet 116 in the reaction tank 10 It was made to act as a vortex guide (引導) contributing to the rapid diffusion into the interior of the

As shown in Fig. 4, the blades 122 of the air diffuser 120 form a streamlined body to increase the flow rate of the wastewater and induce the increase, diffusion and discharge of the bubble mixture, as well as the surface of the streamlined body. A plurality of streamlined protrusions 124 were installed.

In the above embodiment, reference numeral 160 denotes a lifting hook used when the underwater aeration device 100 is installed in the reaction tank 10 or is lifted for cleaning and maintenance.

The underwater aeration apparatus 100 configured as described above, by the installation of the air diffusion pipe (Air Diffusing Chamber) 140 for discharging air to the wing 120 side inside the casing 110, as shown in FIG. Similarly, the bubble mixed pressure liquid discharged through the outlet 116 of the casing 110 is strongly directed from the air diffusion hole 142 of the air diffusion pipe 140 toward the body portion 114 of the casing 110 . It is discharged and spread evenly to the upper and lower parts of the reaction tank by the air pressure that comes out from the body part 114 . This action provides the benefit of improving the purification ability of the wastewater by increasing the oxygen dissolution rate in the wastewater accommodated in the reaction tank while consuming the same amount of power and air as in the prior art.

In addition, during the operation as described above, the vortex generated from the vortex current inducing means 118 formed to face the wings 122 of the diffuser rotor 120 and guided toward the outlet 116 is generated by the diffuser rotor 120 . It acts to strongly entrain the bubble mixed pressure solution that is ejected from the flow velocity accelerator, so that the bubble mixed pressure solution is finely subdivided and rapidly diffused into the reaction tank 10 to increase the oxygen dissolution rate.

In addition, the wings 122 also form a streamlined body, and by the configuration in which a plurality of streamlined protrusions 124 are installed on the surface of the streamlined body, the flow rate of the bubble mixed pressure liquid generated by the air diffuser 120 is increased while It contributes to the diffusion of the bubble mixed pressure solution which increases the oxygen dissolution rate by the water flow arrangement to equalize the flow.

5 is a view showing another example of the underwater abandonment apparatus according to the present invention.

This embodiment relates to a deep tank (深槽) underwater aeration apparatus 200, the deep tank (深槽) underwater aeration apparatus 200 is a reaction tank for the purpose of solving the problem of a narrow site while purifying a large amount of wastewater It is only different from the standard type underwater abandonment apparatus of the embodiment in that it is configured to be installed and used in the deep tank 20, and the upper part of the casing 210 of the deep tank underwater abandonment apparatus 200 or The configuration and action of the air diffusion pipe (Air Diffusing Chamber) 240 having an air diffusion hole 242 installed in the lower position in the form of a ring to diffuse air are the same as in the above embodiment, so a separate description is omit Reference numeral 210 denotes a casing, and 216 denotes an outlet, respectively.

The present invention provides the advantage of being able to cleanly purify the treated water by installing it in a reaction tank for domestic sewage or industrial or livestock wastewater.

100: underwater abandonment device
110: casing
114: body
116 : vent
118: vortex induction means
120: acid rotor
122 : wings
124: turn
126: underwater reduction motor
130: air inlet pipe
140, 240: Air Diffusing Chamber
142, 242: air diffusion hole
200: deep sea underwater abandonment device
210: casing
216 : vent

Claims (3)

a casing having a hollow body having an opening that is opened to a reactor in which wastewater is accommodated, and a plurality of jets installed radially from an upper portion of the body to communicate with the reactor and the opening;
an air diffuser having wings positioned inside the body of the casing and installed to be driven by an underwater deceleration motor to aerate and agitate the wastewater absorbed through the opening, and then eject the wastewater into the reactor through the spouts;
an air inlet pipe which is supported in a state of being in contact with the air supply pipe at the lower part of the air diffuser and supplies air to the mixed pressure liquid being aerated and stirred by the air diffuser rotor;
It is installed in a ring shape on the upper or lower portion of the outer peripheral surface of the body of the casing at a position spaced apart from the air inlet pipe, is connected to the air supply pipe by a connecting pipe, and is connected to the air supply pipe by a plurality of air diffusion holes formed inside or outside an air diffusion pipe for allowing the air blown from the air supply pipe to be diffused into the reaction tank; and
A vortex induction means in the form of an inclined groove is installed at regular intervals along the entire circumference of the inner circumferential surface of the body of the casing to quickly guide and discharge the mixed pressure liquid in the vortex phase generated by the diffuser to the plurality of spouts. including;
The wings attached to the air diffuser are formed into a streamlined body in order to increase the flow rate of treated water and bubble diffusion and discharge, and a plurality of streamlined protrusions are installed on the surface of the streamlined body, and the connecting pipe is the air An underwater aeration device, characterized in that it is configured to be smaller than the diameter of the diffusion pipe and the air pipe.











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