KR102498555B1 - Stirring Device For Water Treatment - Google Patents

Abstract

The present invention relates to an agitator for water treatment, and more particularly, to an agitator for water treatment for agitating water collected in a reaction tank having a predetermined shape, wherein a first through hole (111) is formed in the center of the upper surface and a second through hole (111) in the center of the lower surface ( 112) and a gas supply port near the first through hole 111, while the other side is provided with a cylindrical casing body 110 positioned upright in a sealed state; a gas transfer pipe 200 positioned upright for transporting the gas received and introduced into the casing body 110 into the water; An impeller 300 located at a lower end of the gas transport pipe 200 to discharge the transported gas to the outside; and a drive motor 400 positioned at an upper end of the gas transfer pipe 200 to rotate the gas transfer pipe 200 at a predetermined speed.

Description

Stirrer for water treatment {Stirring Device For Water Treatment}

The present invention relates to an agitator for water treatment, and more particularly, to an agitator for water treatment in which fine bubble formation and water agitation are performed alternatively or simultaneously, and gas selection for bubble formation is facilitated.

A large amount of sewage, wastewater, and sewage containing various pollutants is generated every day from households, restaurants, livestock farms, and factories. contaminants are removed.

The biological method, which has been widely used for a long time, is a method of removing pollutants using useful microorganisms, and is very useful for purifying wastewater containing a large amount of organic pollutants.

During the sewage and wastewater process, the aerobic reactor removes organic matter through oxygen supply and agitation due to aeration. When oxygen is supplied in an appropriate range, aerobic microorganisms oxidize, adsorb, and assimilate organic matter. purification takes place

As such, dissolved oxygen is absolutely necessary to remove organic matter by aerobic microorganisms, and in order to maximize the removal of organic matter while rapidly progressing the reaction, and to prevent degassing of carbon dioxide gas generated by the decomposition of microorganisms and precipitation of sludge, dissolved oxygen must be maintained. Other than that, mixing and stirring are very important.

However, the generally used agitator is an aeration device using an aeration tube, and most of them are only surface aeration devices. In addition, there is a problem that the gas to be injected is limited.

Korea Patent No. 1347269

The present invention has been made to solve the above problems, and an object of the present invention is to provide an agitator for water treatment capable of generating fine bubbles into a reaction tank and at the same time inducing a strong water flow.

In addition, an object of the present invention is to provide an agitator for water treatment capable of selectively controlling the generation of bubbles and the generation of water flow.

In addition, an object of the present invention is to provide an agitator for water treatment that can easily select the type of gas supplied to the reaction tank.

The water treatment agitator of the present invention for solving the above problems is a water treatment agitator for stirring water collected in a reaction tank of a predetermined shape, and has a first through hole 111 in the center of the upper surface and a second through hole in the center of the lower surface ( 112) and a gas supply port near the first through hole 111, while the other side is provided with a cylindrical casing body 110 positioned upright in a sealed state; a gas transfer pipe 200 positioned upright for transporting the gas received and introduced into the casing body 110 into the water; An impeller 300 located at a lower end of the gas transport pipe 200 to discharge the transported gas to the outside; and a drive motor 400 positioned at an upper end of the gas transport pipe 200 to rotate the gas transport pipe 200 at a predetermined speed.

In addition, in the agitator for water treatment of the present invention, the first bearing 120 is provided on the outer periphery of the first through hole 111, and the second bearing 130 is mounted on the outer periphery of the second through hole 112, The gas transfer pipe 200 has a cylindrical transfer tube body 210 having the same inner diameter and having a gas inlet hole 211 at a predetermined position on the outer surface, and the transfer tube body located on the upper surface of the transfer tube body 210. 210 includes an extension portion 220 having a relatively smaller inner diameter than the extension portion 220, but a predetermined upper area passes through the first through hole 111 while the side surface of the extension portion 220 is in close contact with the first bearing 120. passes through and is exposed upward, while the side surface of the transfer pipe body 210 is in close contact with the second bearing 130, and a predetermined lower area passes through the second through hole 112 and is exposed downward, and the impeller ( 300) is a disc-shaped first plate 310 having a socket 311 in the center so that gas passing through the inside of the transfer tube body 210 can move while being fastened to the lower end of the transfer tube body 210, the A disk-shaped second plate 320 located below the first plate 310 and having a plurality of first guide vanes 321 protruding at a predetermined height, having a predetermined radius of curvature, and radially positioned on the upper surface, and Located below the second plate 320, a fluid inlet hole 331 through which water is introduced is provided in the center, and formed in a fan shape while protruding at a predetermined height on the upper surface, radially along the edge of the fluid inlet hole 331. It includes a disk-shaped third plate 330 provided with a plurality of second guide vanes 332 located in the shape, and the drive motor 400 has the gas transfer pipe 200 rotated at a predetermined speed. It includes a shaft 410 connected to the extension part 220, and a bolt B passes through the first plate 310 to fix the first plate 310 and the second plate 320 to each other. A first fastening hole 312 is provided while the A second fastening hole 322 is formed in the first guide vane 321 on the same vertical line as the first fastening hole 312, and the second plate 320 and the third plate 330 are mutually fixed. In order to do this, the second plate 320 is provided with a third fastening hole 323 through which the bolt B passes, while the second guide vane 332 and the third plate 330 have the third fastening hole. It is characterized in that the fourth fastening hole 333 and the fifth fastening hole 334 are respectively formed on the same vertical line as (323).

In addition, in the agitator for water treatment of the present invention, the first plate 310 and the second plate 320 have the same inner diameter, and the third plate 330 has the first plate 310 and the second plate 320 ) is characterized by a relatively larger inner diameter than

In addition, in the agitator for water treatment of the present invention, the first bearing 120 is provided on the outer periphery of the first through hole 111, and the second bearing 130 is mounted on the outer periphery of the second through hole 112, The gas transfer pipe 200 has a cylindrical transfer tube body 210 having the same inner diameter and having a gas inlet hole 211 at a predetermined position on the outer surface, and the transfer tube body located on the upper surface of the transfer tube body 210. 210 includes an extension portion 220 having a relatively smaller inner diameter than the extension portion 220, but a predetermined upper area passes through the first through hole 111 while the side surface of the extension portion 220 is in close contact with the first bearing 120. passes through and is exposed upward, while the side surface of the transfer pipe body 210 is in close contact with the second bearing 130, and a predetermined lower area passes through the second through hole 112 and is exposed downward, and the impeller ( 300) is a disc-shaped first plate 310 having a socket 311 in the center so that gas passing through the inside of the transfer tube body 210 can move while being fastened to the lower end of the transfer tube body 210, the A plurality of first guide vanes 321 located under the first plate 310, protruding at a predetermined height, having a predetermined radius of curvature, and positioned in a radial shape are provided on the upper surface, while protruding at a predetermined height on the lower surface in a fan shape. A disc-shaped second plate 320 equipped with a plurality of third guide vanes 324 located in a radial shape and located under the second plate 320 and fluid inflow into which water flows in the center It includes a disk-shaped third plate 330 having a hole 331, and the driving motor 400 has a shaft connected to the extension part 220 to rotate the gas transfer pipe 200 at a predetermined speed. 410, and to fix the first plate 310 and the second plate 320 to each other, the first plate 310 has a first fastening hole 312 through which a bolt B passes. On the other hand, the first guide vane 321 has the first A second fastening hole 322 is formed on the same vertical line as the fastening hole 312, and in order to fix the second plate 320 and the third plate 330 to each other, the third guide vane 324 has A sixth fastening hole 325 through which the bolt B passes is provided, while a fifth fastening hole 334 is formed on the same vertical line as the sixth fastening hole 325 in the third plate 330. to be

In addition, in the agitator for water treatment of the present invention, the gas supply pipe 500 for supplying air, oxygen, nitrogen or carbon dioxide to the gas supply port of the casing body 110 and the supply of air, oxygen, nitrogen or carbon dioxide are opened and closed. It is characterized by being equipped with a control valve (V) for

In addition, in the agitator for water treatment of the present invention, the inlet of the fluid inlet hole 331 of the third plate 330 has a rounded shape having a predetermined radius of curvature (R) to lower the inflow resistance of water. Characterized in that.

In addition, in the agitator for water treatment of the present invention, it is characterized in that a plurality of slits (S) are formed in the first guide vane (321).

According to the agitator for water treatment of the present invention, gas is suctioned and supplied from the outside of the reaction tank by the diffusive force of the rotating impeller to generate fine bubbles, and at the same time, the water inside the reaction tank circulates, thereby increasing the agitation effect.

In addition, according to the agitator for water treatment of the present invention, it is possible to circulate only the water inside the reaction tank while blocking the supply of gas, thereby expanding the applicability.

In addition, according to the agitator for water treatment of the present invention, there is an advantage in that the type of gas to be supplied, such as air, oxygen, carbon dioxide, and nitrogen, can be variously selected.

1 is a perspective view of an agitator according to a first preferred embodiment of the present invention.
2 is an exploded perspective view of the agitator shown in FIG. 1;
3 is an exploded perspective view of an impeller in the agitator shown in FIG. 1;
4 is a cross-sectional view of an impeller in the agitator shown in FIG. 1;
5 is an exploded perspective view of an impeller according to a second preferred embodiment of the present invention.
6 is an exploded perspective view of an impeller according to a third preferred embodiment of the present invention.
7 is a cross-sectional view of an impeller according to a third preferred embodiment of the present invention.
8 is a conceptual diagram for explaining the flow of gas and liquid when the stirrer according to the first preferred embodiment of the present invention operates.

In this application, terms such as "comprise", "have" or "have" are intended to indicate that there is a feature, number, step, component, part, or combination thereof described in the specification, but one or more other It should be understood that it does not preclude the possibility of addition or existence of features, numbers, steps, operations, components, parts, or combinations thereof.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle. Other expressions describing the relationship between elements, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", etc., should be interpreted similarly.

Hereinafter, an agitator for water treatment according to the present invention will be described. The same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

In the present invention, a reaction tank is defined as including a lake or a dam in addition to a reaction space used for wastewater treatment.

1 is a perspective view of an agitator according to a first preferred embodiment of the present invention, FIG. 2 is an exploded perspective view of the agitator shown in FIG. 1, FIG. 3 is an exploded perspective view of an impeller in the agitator shown in FIG. 1, and FIG. It is a cross-sectional view of the impeller in the agitator shown in.

The agitator of the present invention is installed in a reaction tank having various shapes such as a circular or rectangular horizontal cross section to agitate collected water. Let's define this floating state.

1 to 4, the agitator for water treatment according to the first preferred embodiment of the present invention includes a casing 100, a gas transfer pipe 200, an impeller 300, a drive motor 400 and a gas supply pipe ( 500).

First, the casing 100 will be described. The casing 100 includes a casing body 110, a first bearing 120, and a second bearing 130. The casing body 110 positioned in an upright state has an empty inside and a cylindrical shape. am. A first through-hole 111 is provided in the center of the upper surface and a second through-hole 112 is provided in the center of the lower surface, while near the first through-hole 111, a gas for inducing gas from the outside into the casing body 110 is provided. A gas supply port is provided, and surfaces other than the aforementioned first through hole 111, second through hole 112, and gas supply port remain sealed.

Also, the first bearing 120 is mounted on the outer periphery of the first through hole 111 , and the second bearing 130 is provided on the outer periphery of the second through hole 112 .

The gas transport pipe 200 is accommodated inside the casing body 110 and is for transporting the gas supplied to the casing body 110 into the water, and is positioned upright in the same way as the casing body 110.

Specifically, the gas transfer pipe 200 is composed of a transfer tube body 210 and an extension portion 220. The transfer tube body 210 has the same inner diameter and has one or more gas inflows having a predetermined cross-sectional area near the upper end of the outer surface. It has a cylindrical shape provided with a hole 211 . The extension part 220 is located on the upper surface of the transfer tube body 210 and has a relatively smaller inner diameter than the transfer tube body 210 .

The side of the extension part 220 of the gas transfer pipe 200 having the above configuration is located so that the upper predetermined area passes through the first through hole 111 and is exposed upward while in close contact with the first bearing 120, While the side surface of the lower end of the transfer pipe body 210 is in close contact with the second bearing 130, a predetermined lower area passes through the second through hole 112 and is exposed to the lower portion.

In the agitator of the present invention, the principle that gas supplied from the outside is sucked into the water by the rotational force of the transfer pipe body 210 is applied, and the casing body 110 is placed on the outer circumferential surface of the transfer tube body 210 By interposing the first bearing 120 and the second bearing 130 between the body 210 and the casing body 110, the transfer pipe body 210 rotating at high speed can be stably supported, and furthermore, the casing body ( 110) and the transfer pipe body 210, there is provided a space to temporarily accommodate gas, so that gas to be supplied into the water can be easily selected.

Although not shown in the drawing, it is more preferable that the casing body 110 is fixed to the inner wall of the reactor or a separate structure through a known fixing means such as a wire.

Next, the impeller 300 will be described. The impeller 300 is located at the lower end of the gas transfer tube 200, bubbles the gas supplied through the transfer tube body 210, and at the same time sucks water from the reaction vessel and releases it again to agitate the water in the reaction vessel. Then, the selected gas is diffused over a wide area.

The impeller 300 performing the above functions includes a first plate 310, a second plate 320 and a third plate 330.

First, the first plate 310 has a disk shape, and a socket 311 detachably fastened to the lower end of the transfer tube body 210 is provided in the center so as to drive together as the transfer tube body 210 rotates, In addition, the bottom of the socket 311 is open so that the gas can move toward the second plate 320.

The second plate 320 positioned below the first plate 310 has a disk shape similar to the first plate 310, and a plurality of first guide vanes 321 protruding at a predetermined height are provided on the upper surface.

Here, the first guide vane 321 is preferably located in a radial shape, and it is more preferable that each first guide vane 321 has a spiral shape to have a predetermined radius of curvature, which reduces the collision angle between gas and water. This is to avoid creating too large a shear force by making it small. That is, if the shear force is too large, it is advantageous for fluid diffusion, but the large shear force induces the generation of large bubbles, and therefore, a spiral structure having a predetermined radius of curvature forms an appropriate shear force, which is advantageous for forming finer bubbles.

Meanwhile, a plurality of slits S may be further provided along the vertical or horizontal direction of the first guide vane 321, and when such slits S are additionally provided, it is possible to form finer bubbles.

The third plate 330 positioned under the second plate 320 has a disk shape like the first plate 310, and a fluid inlet hole 331 is provided in the center to allow water in the reaction tank to flow in. Further, the upper surface is provided with a plurality of second guide vanes 332 positioned in a radial shape along the edge of the fluid inlet hole 331 while protruding at a predetermined height.

That is, the first guide vane 321 interposed between the first plate 310 and the second plate 320 finely bubbles the gas introduced through the transfer pipe body 210, while the second plate ( 320) and the third plate 330, the second guide vane 332 is for sucking in water from the reaction tank and then discharging it to the outside again.

Here, unlike the first guide vane 321, the second guide vane 332 preferably has a fan-shaped or trapezoidal shape, which is advantageous in that the water flow is formed to a maximum distance by using the centrifugal force during rotation of the impeller 300. because it does

On the other hand, the inlet of the fluid introduction hole 331 of the third plate 330 preferably has a rounded shape having a predetermined radius of curvature R so as to minimize resistance of water introduced from the lower side.

The above-described first plate 310, second plate 320, and third plate 330 may be individually provided to facilitate replacement or repair, and then fixed to each other using a bolt fastening method.

For example, in order to fix the first plate 310 and the second plate 320 to each other, the first plate 310 is provided with a first fastening hole 312 through which the bolt B can penetrate from the top. Meanwhile, a second fastening hole 322 is formed on the same vertical line as the first fastening hole 312 in the first guide vane 321 . In addition, in order to fix the second plate 320 and the third plate 330 to each other, the second plate 320 is provided with a third fastening hole 323 so that the bolt B can penetrate from the bottom, while A fourth fastening hole 333 and a fifth fastening hole 334 may be formed in the second guide vane 332 and the third plate 330 so as to be positioned on the same vertical line as the third fastening hole 323 .

Subsequently, the driving motor 400 and the gas supply pipe 500 will be described in detail. The drive motor 400 is for rotating the transport pipe body 210 at a predetermined speed and is located on the top of the gas transport pipe 200, one side is connected to the drive motor 400 and the other side is connected to the extension part 220. It includes a shaft 410 to be.

The gas supply pipe 500 is connected to the gas supply port of the casing body 110, and it is preferable that a control valve V for opening and closing the gas supply is installed at a predetermined position.

Here, the gas supplied to the gas supply pipe 500 may be air, oxygen, nitrogen or carbon dioxide, but is not necessarily limited to these gases.

Most conventional agitators stop at simply stirring water or supplying air into water, but the agitator of the present invention can induce circulation of water together with gas supply, and in particular, can freely select the type of gas to be injected, so that various types of agitators can be used. It can be applied to water treatment process.

For example, when operating the reaction tank in an aerobic state during wastewater treatment, that is, to uniformly mix the wastewater inside the reaction tank while maintaining dissolved oxygen within a predetermined concentration range, in a state in which the inlet of the gas supply pipe 500 is exposed to the atmosphere When the driving pump 400 is operated and the reaction tank is maintained in an anaerobic or anaerobic state for denitrification, it can be achieved by connecting the inlet of the gas supply pipe 500 to a tank (not shown) filled with nitrogen gas.

Of course, when the purpose of simply stirring without supplying gas at all is to close the control valve V of the gas supply pipe 500.

5 is an exploded perspective view of an impeller according to a second preferred embodiment of the present invention. Only the size of the plate constituting the impeller is different from the first embodiment described with reference to FIGS. 1 to 4, and the rest of the configuration is the same, so only the different configurations will be described below.

In the impeller 300 according to the second embodiment of the present invention, the first plate 310 and the second plate 320 have the same inner diameter, and the third plate 330 has the first plate 310 and the second plate It has a relatively larger inner diameter than (320).

Since the area of the third plate 330 is relatively large, the impeller 300 having the above structure is advantageous in transferring the water flow to a longer distance in the horizontal direction.

6 is an exploded perspective view of an impeller according to a third preferred embodiment of the present invention, and FIG. 7 is a cross-sectional view of the impeller according to a third preferred embodiment of the present invention. Only the second plate 320 and the third plate 330 are different from the first embodiment described with reference to FIGS. 1 to 4, and the rest of the configuration is the same, so only the different configurations will be described below.

The second plate 320 located under the first plate 310 has a disk shape similar to the first plate 310, and a plurality of first guide vanes 321 protruding at a predetermined height are provided on the upper surface, while A plurality of third guide vanes 324 protruding at a predetermined height are provided on the lower surface.

And the third plate 330 located below the second plate 320 is provided with a fluid inlet hole 331 through which water is introduced in the center.

The first plate 310, the second plate 320, and the third plate 330 may be mutually fixed by a bolt fastening method. For example, in order to fix the first plate 310 and the second plate 320 to each other, to fix the first plate 310 and the second plate 320 to each other, the first plate 310 has a bolt (B) ) Is provided with a first fastening hole 312 penetrating from the top, while the first guide vane 321 has a second fastening hole 322 formed on the same vertical line as the first fastening hole 312, In order to fix the second plate 320 and the third plate 330 to each other, the third guide vane 324 is provided with a sixth fastening hole 325 through which the bolt B passes from the bottom, while the third plate 330 ) has a fifth fastening hole 334 formed on the same vertical line as the sixth fastening hole 325 .

8 is a conceptual diagram for explaining the flow of gas and liquid when the stirrer according to the first preferred embodiment of the present invention operates.

After placing the stirrer according to the present invention in the reaction tank, when the driving pump 400 is operated, the transfer pipe body 210 rotates and the impeller 300 connected to the transfer tube body 210 also rotates.

Then, gas is introduced into the gas supply pipe 500 by the rotational force of the impeller 300, and the introduced gas sequentially passes through the gas inlet hole 211 of the transfer pipe body 210 and the inside of the transfer pipe body 210. Then, after moving to the first plate 310 and the second plate 320, fine bubbles are formed in the water.

In addition, the water in the reaction tank is introduced between the second plate 320 and the third plate 330 through the fluid inlet hole 331 of the third plate 330 and flows out again to form a water stream.

As above, specific parts of the present invention have been described in detail, and to those skilled in the art, these specific descriptions are only preferred embodiments, and the scope of the present invention is not limited thereby, and the scope of the present invention It is obvious to those skilled in the art that various changes and modifications are possible within the scope and scope of the technical idea, and it goes without saying that these changes and modifications fall within the scope of the appended claims.

100: casing
110: casing body
111: first through hole 112: second through hole
120: first bearing 130: second bearing
200: gas transfer pipe
210: transfer pipe body
211: gas inlet hole
220: extension
300: impeller
310: first plate
311: socket 312: first fastening hole
320: second plate
321: first guide vane 322: second fastening hole
323: third fastening hole 324: third guide vane
325: 6 fastening hole
330: third plate
331: fluid inlet hole 332: second guide vane
333: 4th fastening hole 334: 5th fastening hole
400: drive pump
410: shaft
500: gas supply pipe
B: Bolt S: Slit
R: radius of curvature V: control valve

Claims (5)

As an agitator for water treatment for agitating water collected in a reaction tank of a predetermined shape,
A first through hole 111 is provided in the center of the upper surface, a second through hole 112 is provided in the center of the lower surface, and a gas supply port near the first through hole 111 is provided, while the other surface is upright in a sealed state. a cylindrical casing body 110;
a gas transfer pipe 200 positioned upright for transporting the gas received and introduced into the casing body 110 into the water;
An impeller 300 located at a lower end of the gas transport pipe 200 to discharge the transported gas to the outside; and
Located at the upper end of the gas transport pipe 200, a drive motor 400 for rotating the gas transport pipe 200 at a predetermined speed; including,
A first bearing 120 is provided on the outer periphery of the first through hole 111, and a second bearing 130 is mounted on the outer periphery of the second through hole 112,
The gas transfer pipe 200 has a cylindrical transfer tube body 210 having the same inner diameter and having a gas inlet hole 211 at a predetermined position on the outer surface, and the transfer tube body located on the upper surface of the transfer tube body 210. 210 includes an extension portion 220 having a relatively smaller inner diameter than the extension portion 220, but a predetermined upper area passes through the first through hole 111 while the side surface of the extension portion 220 is in close contact with the first bearing 120. passes through and is exposed upward, and a predetermined lower area passes through the second through hole 112 and is exposed downward while the side surface of the transfer pipe body 210 is in close contact with the second bearing 130,
The impeller 300 is fastened to the lower end of the transfer tube body 210 while the first plate 310 in the shape of a disc has a socket 311 in the center so that gas passing through the transfer tube body 210 can move. ), a plurality of first guide vanes 321 located under the first plate 310, protruding at a predetermined height on the upper surface, having a predetermined radius of curvature, and positioned in a radial shape, while protruding at a predetermined height on the lower surface. A disk-shaped second plate 320 equipped with a plurality of third guide vanes 324 positioned in a radial shape and located under the second plate 320 in a fan shape, and water flows in at the center It includes a disc-shaped third plate 330 provided with a fluid inlet hole 331 to be,
The drive motor 400 includes a shaft 410 connected to the extension part 220 to rotate the gas transfer pipe 200 at a predetermined speed,
In order to fix the first plate 310 and the second plate 320 to each other, a first fastening hole 312 through which a bolt B passes is provided in the first plate 310 while the first guide A second fastening hole 322 is formed on the same vertical line as the first fastening hole 312 in the vane 321,
In order to fix the second plate 320 and the third plate 330 to each other, the third guide vane 324 is provided with a sixth fastening hole 325 through which a bolt B passes, while the third guide vane 324 Agitator for water treatment, characterized in that the fifth fastening hole 334 is formed on the same vertical line as the sixth fastening hole 325 in the plate 330.
delete According to claim 1,
A gas supply pipe 500 for supplying air, oxygen, nitrogen or carbon dioxide and a control valve V for opening and closing the supply of air, oxygen, nitrogen or carbon dioxide are mounted at the gas supply port of the casing body 110. Agitator for water treatment, characterized in that.
According to claim 1,
An agitator for water treatment, characterized in that the inlet of the fluid inlet hole 331 of the third plate 330 has a rounded shape having a predetermined radius of curvature (R) to lower the inflow resistance of water.
According to claim 1,
Agitator for water treatment, characterized in that a plurality of slits (S) are formed in the first guide vane (321).

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