Lifting and mixing aeration system for easy maintenance of air diffuser and differential control in tank

Abstract

The present invention relates to a lifting and mixing aeration system which facilitates maintenance of an air diffuser and differential control in a tank, the lifting and mixing aeration system comprises: a support plate inserted into an aeration tank to be seated on a floor; an air generation unit including multiple air diffusers installed on an upper portion of the support plate, and multiple air nozzles formed in each of the air diffusers; and an elevation unit including multiple rings formed on an outer circumference of an upper surface of the support plate, a wire fastened to the rings and vertically disposed upward, a support formed on an upper portion of the aeration tank, and a winding motor in which a rotary shaft on which a sprocket and a pulley on which the wire is wound are formed is rotatably mounted on the support, the winding motor being mounted on the support and connected to the sprocket by a chain to rotate the rotary shaft to wind or unwind the wire to enable the elevation unit to be moved up and down.

Description

Lifting and mixing aeration system with easy maintenance of the aeration device and differential control within the tank

[0001] The present invention relates to a lifting and mixing aeration system that facilitates maintenance of an aeration device and differential control within a tank, and more specifically, to a lifting and mixing aeration system that facilitates maintenance of an aeration device and differential control within a tank by moving a support plate having a plurality of aeration tubes installed thereon at regular intervals up and down in a state where wastewater is filled without discharging or dredging the wastewater filled inside a sewage treatment tank or an aeration tank, thereby facilitating maintenance and replacement of the aeration tubes.

[0002] In general, wastewater, industrial wastewater, livestock wastewater, leachate, etc. discharged from households into rivers are prevented from being directly discharged into rivers and polluted by introducing wastewater and sewage into a treatment device, purifying the wastewater and sewage, and then discharging it into the river to prevent river pollution. The above-mentioned device for treating wastewater and sewage is divided into a sedimentation tank and an aeration tank. After wastewater flows into the sedimentation tank, this substance is precipitated, and this wastewater is introduced into the aeration tank. Then, in the aeration tank under aerobic conditions with dissolved oxygen, various organic substances contained in the wastewater and sewage are used as culture materials, and a mixture of microorganisms that process organic substances are purified to cultivate microorganisms, and the microorganisms that have been cultured with difficulty remove the organic substances mixed in the wastewater and sewage through a step-by-step process such as oxidation, decomposition, coagulation, adsorption, and sedimentation in an aerobic state, thereby purifying the wastewater.

[0003] The diffuser tube, which is firmly fixed to the bottom of the aeration tank, may develop cracks at the connection to the air pipe or the diffuser tube, or in severe cases, may be broken due to the high pressure pulsating pressure and continuous buoyancy flowing in through the air pipe.

[0004] Therefore, when repairing a broken diffuser installed at the bottom of an aeration tank, all the water (wastewater) filled in the aeration tank must be drained. However, since the aeration tank is at least several meters long and wide, draining the water takes a considerable amount of time and effort. In addition, since the water filled in the aeration tank is unpurified wastewater, a separate space must be prepared to temporarily store it and then return it to its original position once the repair is complete. Therefore, in most cases, a certain number of diffusers are left untreated until they break down, which reduces the efficiency of the aeration tank.

[0005] The present invention has been devised to solve the problems of the prior art.

[0006] First, it is convenient in that it is possible to maintain and replace the aeration pipe without discharging the wastewater inside the tank, so that the water purification facility can be operated continuously without stopping the water purification facility, and the aeration pipe can be easily maintained and replaced.

[0007] Second, by moving the support plate with multiple diffusers installed at regular intervals up and down to facilitate maintenance and replacement of the diffusers, workers replacing and repairing the diffusers do not enter the aeration tank, thereby preventing safety accidents.

[0008] Third, the purpose is to provide a lifting and mixing aeration system that is easy to maintain and control within the tank, which has the advantage of modularizing the main body equipped with multiple aeration devices to facilitate installation or disassembly, and easy maintenance of the aeration device and easy differential control within the tank.

[0009] The above-described object of the present invention can be achieved by a lifting and mixing aeration system that is easy to maintain and control differential conditions within an aeration tank, characterized by including: a support plate (200) that is inserted into the inside of an aeration tank (100) and is settled on the bottom; an aeration pipe (320) that is installed at regular intervals on the upper portion of the support plate (200); a plurality of aeration pipes (350) that are installed in the aeration pipe installation pipe (320); an injection pipe (340) that is connected to the aeration pipe installation pipe (320) and supplies air to the aeration pipe installation pipe (320); and an elevating unit that raises or lowers the support plate (200) to raise it higher than the water level of the aeration tank or lowers it to be submerged in water.

[0010] The above injection pipe (340) is a flexible hose that is wound by a winding device when the support plate (200) is raised and released from the winding device when it is lowered, and can be achieved by a lifting and mixing aeration system that facilitates maintenance of the aeration device and differential control within the tank.

[0011] The above-mentioned lifting unit (500) is characterized by comprising a plurality of rings (201) formed on the outer periphery of the upper surface of the support plate (200), a wire (400) connected to the rings (201) and vertically arranged upward, a pulley (522) on which the wire (400) is wound and a rotating shaft (520) having a sprocket (525) formed thereon are rotatably mounted on the upper part of the aeration tank (100), and a winding motor (523) connected to the sprocket (525) by a chain to rotate the rotating shaft (520) to wind or unwind the wire (400) to perform an up-and-down operation, which can be achieved by a lifting and mixing aeration system that is easy to maintain and control differentially within the tank.

[0012] The aeration tank (100) further includes a mixer device (600) for flowing wastewater to prevent sedimentation of sludge, which can be achieved by a lifting and mixing aeration system that is easy to maintain and control differential conditions within the tank.

[0013] The aeration tank (100) includes a lift bar (550) inside the aeration tank (100) to guide the support plate (200) to be easily raised and lowered while preventing the support plate (200) from moving when being raised and lowered. This can be achieved by a lifting and mixing aeration system that is easy to maintain and control the differential within the tank.

[0014] The present invention is a useful invention having the advantage of being able to maintain and replace a diffuser without discharging wastewater inside an aeration tank, thereby facilitating the maintenance and replacement of a diffuser while continuously operating a water purification facility without stopping the facility, and further, by moving a support plate on which a plurality of diffusers are installed up and down at regular intervals to facilitate the maintenance and replacement of the diffusers, thereby preventing safety accidents by preventing a worker replacing or repairing the diffuser from entering the aeration tank, and by modularizing a main body equipped with a plurality of diffusers so that installation or disassembly work can be facilitated, thereby facilitating the maintenance of a diffuser device and differential control within the tank.

[0015] FIG. 1 is a perspective view of a lifting, mixing aeration system that facilitates maintenance of the aeration device and differential control within the tank according to one embodiment of the present invention.

[0016] Figure 2 is a cross-sectional view of a lifting and mixing aeration system that facilitates maintenance of the aeration device and differential control within the tank according to one embodiment of the present invention, mounted on an aeration tank.

[0017] FIG. 3 is a cross-sectional view showing the lifting and mixing aeration system, which facilitates maintenance of the aeration device and differential control within the tank, in an aeration tank according to one embodiment of the present invention.

[0018] FIG. 4 is a drawing showing a lifting and mixing aeration system that facilitates maintenance of the aeration device and differential control within the tank according to another embodiment of the present invention.

[0019] FIG. 5 is a plan view showing a lifting and mixing aeration system that facilitates maintenance of the aeration device and differential control within the tank according to another embodiment of the present invention.

[0020] Fig. 6 is a cross-sectional view showing the structure of the air vent, which is a key part of the present invention.

[0021] The following is a detailed description of a preferred embodiment based on the attached drawings.

[0022] The embodiments described below are intended to be detailed enough to enable a person of ordinary skill in the art to easily practice the invention, and do not mean that the technical idea and scope of the present invention are limited thereby.

[0023] In addition, the size and shape of the components depicted in the drawings may be exaggerated for clarity and convenience of explanation, and terms specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator, and it is to be noted that the definitions of these terms should be made based on the contents throughout this specification.

[0024] Among the attached drawings, FIG. 1 is a perspective view of a lifting, mixing aeration system that facilitates maintenance of an aeration device and differential control within a tank according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a lifting, mixing aeration system that facilitates maintenance of an aeration device and differential control within a tank according to an embodiment of the present invention mounted on an aeration tank, FIG. 3 is a cross-sectional view showing a lifting, mixing aeration system that facilitates maintenance of an aeration device and differential control within a tank according to an embodiment of the present invention in an elevating operation within an aeration tank, and FIG. 4 is a drawing showing a lifting, mixing aeration system that facilitates maintenance of an aeration device and differential control within a tank according to another embodiment of the present invention.

[0025] The lifting and mixing aeration system (A) according to the present invention, which facilitates maintenance of the aeration device and differential control within the tank, is installed on the floor of an aeration tank (100) of a sewage treatment plant. The aeration tank (100) stores treated water / wastewater, and on the floor of the space, aeration pipes (320) are installed horizontally at regular intervals on the upper part of the support plate (200), and a plurality of detachable aeration pipes (350) are installed in the aeration pipes (320) so that biological water treatment and chemical water treatment can be promoted by generating air bubbles.

[0026] According to one disclosed embodiment, a lifting, mixing aeration system (A) that facilitates maintenance of an aeration device and differential control within a tank comprises: a support plate (200) that is inserted into an aeration tank (100) and is placed on the bottom; a diffuser installation pipe (320) that is installed at regular intervals on the upper portion of the support plate (200); a plurality of diffuser pipes (350) that are installed in the diffuser installation pipe (320); an injection pipe (340) that is connected to the diffuser installation pipe (320) and supplies air to the diffuser installation pipe (320); and a lifting unit that raises or lowers the support plate (200) to raise it higher than the water level of the aeration tank or lowers it so that it is submerged in water.

[0027] The above-mentioned diffuser (350) is a membrane diffuser, and in the membrane diffuser,

[0028] As shown in Fig. 6, an expansion prevention member (10) made of a mesh net of synthetic resin or metal material and preventing excessive expansion of a soft membrane member;

[0029] A soft membrane member (20) made of any one of the elastic materials selected from EPDM rubber, urethane rubber, and silicone rubber, and having air holes formed by cutting at regular intervals to form an “I” shape and then changing into an “O” shape when pressure is applied;

[0030] A main body (40) having an air supply port formed and a mounting groove (42) in which a soft membrane member and an expansion prevention member are installed, a connecting portion (44) formed on the side to which a fixed cover (30) is joined, and a connecting portion formed at the bottom that allows for one-touch connection as an integral part;

[0031] It is composed of a fixed frame (31) that fixes a soft membrane member (20) and an expansion prevention member (10) installed in the above-mentioned fixing groove (42), and a fixed cover (30) that forms a screw portion (32) that is fastened with a joint portion on the inside.

[0032] It is characterized by further including a screen member (60) that absorbs water flowing inward while relieving the pressure supplied to the lower portion of the soft membrane member (20) installed in the above-mentioned settling groove (42) and allowing it to be supplied slowly.

[0033] The above screen member (60) has the effect of absorbing water that flows back into the main body, and also has the safety of preventing the soft membrane member (20) from expanding due to sudden pressure generation when the initial air is supplied, while allowing the soft membrane member (20) to expand gradually. The lifespan of the soft membrane member (20) can be extended by the screen member (60).

[0034] Although not shown in the drawing, the support plate (200) may be a panel having a plurality of holes or a mesh-shaped panel. The plurality of holes allow for easy submersion when lowering into the internal treatment water of the aeration tank (100) and also facilitate easy ascent.

[0035] A diffuser installation pipe (320) is installed at regular intervals on the upper portion of the above-mentioned support plate (200), and a plurality of diffuser pipes (350) are installed at regular intervals on the diffuser installation pipe (320) so that they can be separated and combined.

[0036] Meanwhile, the above-mentioned air distribution pipe (320) may include an injection pipe (340) that supplies air through the air distribution pipe (350). The injection pipe (340) is preferably made of a flexible material that can accommodate the lifting and lowering operation of the support plate (200), and is preferably a flexible hose that is wound by a winding device when the support plate (200) is raised and released from the winding device when it is lowered.

[0037] In addition, as a substitute for the above flexible hose, the injection tube (340) can be used by changing the structure so that multiple inner and outer tubes are connected by a fitting joint and can be folded and extended, thereby allowing the length to be adjusted.

[0038] Accordingly, when the support plate (200) is lowered, the length of the injection pipe (340) can be extended, and when the support plate (200) is raised, the length of the injection pipe (340) can be reduced. One end of the injection pipe (340) is connected to an air supply device so that high-pressure air can be supplied.

[0039] Preferably, a plurality of wheels (240) are formed on the outer periphery of the support plate (200) and can be included to support and roll the inner wall of the aeration tank (100). At this time, the wheels (240) installed on the side of the support plate (200) support the inner wall of the aeration tank (100) so that it does not shake when the support plate (200) is raised or lowered, and can also assist the movement of the aeration tank (100) by rolling so as to guide the movement of the support plate (200).

[0040] According to one embodiment, an elevator (500) is composed of a plurality of rings (201) formed on the outer periphery of the upper surface of a support plate (200), a wire (400) connected to the rings (201) and vertically arranged upward, a support (120) formed on the upper portion of an aeration tank (100), a rotation shaft (520) having a pulley (522) on which the wire (400) is wound and a sprocket (525) formed thereon, which is rotatably mounted on the support (120), and a winding motor (523) mounted on the support (120) and connected to the sprocket (525) by a chain to rotate the rotation shaft (520) to wind or unwind the wire (400) and perform an elevation operation.

[0041] Additionally, as shown in the attached drawing 4, a lift guide bar (560) can be installed and used. The lift guide bar (560) prevents the support plate (200) from shaking or tilting in one direction when being raised or lowered.

[0042] Meanwhile, a safety railing can be additionally installed on the upper surface of the support plate (200) for use. The safety railing prevents workers from falling when replacing or repairing the ventilation pipe (320) and ventilation pipe (350).

[0043] In addition, as shown in the attached drawing 5, it is configured to include an underwater mixer (600) installed on the bottom of the aeration tank (100) or installed on the outside of the lift guide bar (560). The underwater mixer (600) can form a vortex to prevent sedimentation of sludge.

[0044] The present invention is a useful invention having the advantage of being able to maintain and replace a diffuser without discharging wastewater inside an aeration tank, thereby facilitating the maintenance and replacement of a diffuser while continuously operating a water purification facility without stopping the facility, and further, by moving a support plate on which a plurality of diffusers are installed up and down at regular intervals to facilitate the maintenance and replacement of the diffusers, thereby preventing safety accidents by preventing a worker replacing or repairing the diffuser from entering the aeration tank, and by modularizing a main body equipped with a plurality of diffusers so that installation or disassembly work can be facilitated, thereby facilitating the maintenance of a diffuser device and differential control within the tank.

[0045] Although the present invention has been described with reference to preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations may be made therein without departing from the spirit and scope of the invention, and it is to be understood that all such modifications and variations fall within the scope of the appended claims.

[0046] [Explanation of symbols]

[0047] 100: Aeration tank

[0048] 200: Support plate

[0049] 300: Air generator

[0050] 320: Mountain crater

[0051] 350: Air nozzle

[0052] 400: Wire

[0053] 500: Elevator

[0054] 520: Rotation axis

[0055] 522: Pulley

[0056] 523: Winding motor

Claims

1. In a lifting and mixing aeration system that is easy to maintain and control the differential within the aeration tank of a sewage treatment plant, A support plate (200) that is placed inside the aeration tank (100) and is placed on the bottom; A ventilation pipe (320) installed at regular intervals on the upper part of the above support plate (200); A plurality of air diffusers (350) installed in the above air diffuser installation pipe (320); An injection pipe (340) connected to the above-mentioned air distribution pipe (320) and supplying air to the air distribution pipe (320); A lifting unit (500) that raises or lowers the above-mentioned support plate (200) to raise it higher than the water level of the aeration tank or lowers it so that it is submerged in water; It includes, The above-mentioned diffuser (350) is a membrane diffuser, and in the membrane diffuser, An expansion prevention member (10) made of a mesh net of synthetic resin or metal material and preventing excessive expansion of a soft membrane member; A soft membrane member (20) made of any one of the elastic materials selected from EPDM rubber, urethane rubber, and silicone rubber, and having air holes formed by cutting at regular intervals to form an “I” shape and then changing into an “O” shape when pressure is applied; A main body (40) having an air supply port formed and a mounting groove (42) in which a soft membrane member and an expansion prevention member are installed, a connecting portion (44) formed on the side to which a fixed cover (30) is joined, and a connecting portion (45) formed at the bottom that allows for one-touch connection as a whole; It is composed of a fixed frame (31) that fixes a soft membrane member (20) and an expansion prevention member (10) installed in the above-mentioned fixing groove (42), and a fixed cover (30) that forms a screw portion (32) that is fastened with a joint portion on the inside. A lifting and mixing aeration system characterized by easy maintenance of the aeration device and differential control within the tank, comprising a screen member (60) that absorbs the water flowing inward while relieving the pressure supplied to the lower portion of the soft membrane member (20) installed in the above-mentioned settling groove (42) and allowing the water to be supplied slowly.

2. In paragraph 1, A lifting and mixing aeration system that is easy to maintain and control the differential in the tank, characterized in that the above injection pipe (340) is a flexible hose that is wound by a winding device when the support plate (200) is raised and released from the winding device when it is lowered.

3. In paragraph 1, The above-mentioned lifting unit (500) is characterized by comprising a plurality of rings (201) formed on the outer periphery of the upper surface of the support plate (200), a wire (400) connected to the rings (201) and vertically arranged upward, a pulley (522) on which the wire (400) is wound and a rotating shaft (520) having a sprocket (525) formed thereon are rotatably mounted on the upper part of the aeration tank (100), and a winding motor (523) connected to the sprocket (525) by a chain to rotate the rotating shaft (520) to wind or unwind the wire (400) to perform a lifting and mixing aeration system that is easy to maintain and control differentially within the tank.

4. In paragraph 1, A lifting and mixing aeration system characterized in that the aeration tank (100) further includes a mixer device (600) for flowing wastewater to prevent sedimentation of sludge, and is easy to maintain and control differentially within the tank.

5. In paragraph 1, A lifting and mixing aeration system that is easy to maintain and control the differential within the tank, characterized in that the aeration tank (100) includes a lift guide bar (560) that guides the support plate (200) to be easily raised and lowered while preventing the support plate (200) from moving when being raised and lowered.

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