CN219136521U - Sewage aeration device - Google Patents

Abstract

The application discloses a sewage aeration device, which comprises a driving mechanism and a water stirring mechanism which are in driving connection, a floating mechanism for supporting the driving mechanism and the water stirring mechanism, and a water absorbing mechanism which is in driving connection with the driving mechanism and is used for lifting sewage at the bottom of an aeration tank to the water stirring mechanism for aeration; the output end of the driving mechanism is provided with a first driving shaft and a second driving shaft which are coaxially arranged, the second driving shaft is rotationally sleeved on the first driving shaft in a hollow structure, the first driving shaft is in driving connection with the water absorbing mechanism, and the second driving shaft is in driving connection with the water stirring mechanism. According to the utility model, the single motor double-shaft driving is adopted, and the lifting driving of water and the stirring driving of the water are realized, so that the circulating aeration of sewage in the aeration tank is realized, the condition that the existing aeration device can only perform aeration on sewage at a single position is avoided, and the sewage aeration efficiency is further improved.

Description

Sewage aeration device

Technical Field

The utility model relates to the technical field of sewage treatment devices, in particular to an aeration device for increasing oxygen content of sewage in a sewage aeration tank, and specifically relates to a sewage aeration device.

Background

An aeration basin (aeration basin) is a biochemical reactor designed according to the characteristics of microorganisms, and the degradation degree of organic pollutants mainly depends on the designed aeration reaction conditions. The aeration tank utilizes an activated sludge method to treat sewage, a certain sewage residence time is provided in the tank, and the oxygen amount required by aerobic microorganisms and the mixing condition that sewage and activated sludge are fully contacted are met. The aeration tank mainly comprises a tank body, an aeration system and a water inlet and outlet. The tank body is generally constructed by reinforced concrete, and the plane shape of the tank body is rectangular, square, round and the like.

The aeration method can be divided into two types, mainly blast aeration and mechanical aeration. The blast aeration is also called compressed air aeration, and mainly comprises an aeration fan and a special aerator. The aeration tank adopting the method is a rectangular concrete tank, the tank is divided into a plurality of compartments for independently feeding water by using partition walls, and each compartment is divided into a plurality of galleries. The sewage flows in the gallery in sequence after entering the pool, and is discharged to the other end. The air is delivered to an air diffusion device arranged at the bottom of the tank by an air compressor through a pipeline, and is dispersed and escaped as bubbles, and oxygen is dissolved into water at a gas-liquid interface. The diffusion device has four different types of porous pipes, fixed spiral aerators, water ejectors and microporous diffusion plates. Blast aeration is an important part of influencing the water quality of effluent from sewage treatment plants and reducing energy consumption. Due to the characteristics of nonlinearity, hysteresis, time variability and the like in the sewage treatment process, the demand of Dissolved Oxygen (DO) is difficult to determine, and the conventional constant aeration control has the problems of large fluctuation of dissolved oxygen concentration, large aeration consumption, inaccurate aeration and the like.

Mechanical aeration is generally carried out by using a mechanical impeller arranged in an aeration tank to rotate and vigorously agitate wastewater in the tank so as to dissolve oxygen in the air into the water. The impeller is arranged on the surface of wastewater in the tank to perform aeration, which is called surface aeration. The device promotes the wastewater in the pool to continuously circulate through the water lifting function of the impeller, and continuously updates the gas-liquid contact surface to increase the oxygen uptake. When the impeller rotates, a hydraulic jump is formed at the periphery, so that air can be effectively wrapped in; negative pressure is generated at the rear side of the blade, and air can be sucked, so that the inflation effect is better.

In summary, the aeration device is a device which makes water fully contact with air by driving water or driving air, and has various structural designs and great difference in aeration effect.

Disclosure of Invention

In order to solve the problem of aeration of the existing aeration tank aiming at sewage, the application provides a sewage aeration device which is used for replacing a blast aeration device and a mechanical aeration device in the existing aeration tank. Compared with the existing aeration device, the utility model has simpler structure, does not need to lay pipelines on the bottom of the aeration tank, does not need to pertinently set up a steel frame for installing mechanical aeration according to the structure and the size of the aeration tank, and can meet the aeration tanks with various specifications. The utility model can realize aeration by simply fixing the rope in the aeration tank, and can adjust the position at any time according to the needs, which is superior to the prior art in practicality, compatibility and flexibility.

On the other hand, the power of the driving motor of the existing aeration device, especially the mechanical aeration device, is larger, so that the electric energy consumption caused by aeration is also very large. According to the utility model, the single motor double-shaft driving is adopted, and the lifting driving of water and the stirring driving of the water are realized, so that the circulating aeration of sewage in the aeration tank is realized, the condition that the existing aeration device can only perform aeration on sewage at a single position is avoided, and the sewage aeration efficiency is further improved.

In order to achieve the aeration purpose, the technical scheme adopted by the application is as follows:

the sewage aeration device comprises a driving mechanism and a water stirring mechanism which are in driving connection, a floating mechanism for supporting the driving mechanism and the water stirring mechanism, and a water absorbing mechanism which is in driving connection with the driving mechanism and used for lifting sewage at the bottom of an aeration tank to the water stirring mechanism for aeration; the output end of the driving mechanism is provided with a first driving shaft and a second driving shaft which are coaxially arranged, the second driving shaft is rotationally sleeved on the first driving shaft in a hollow structure, the first driving shaft is in driving connection with the water absorbing mechanism, and the second driving shaft is in driving connection with the water stirring mechanism.

Preferably, the water suction mechanism comprises a water suction pipe fixedly connected with the floating mechanism and coaxially arranged with the first driving shaft, a spiral impeller fixedly connected with the first driving shaft is arranged in the water suction pipe, the outer diameter of the spiral impeller is matched with the inner diameter of the water suction pipe, and a guide cover fixedly arranged on the first driving shaft and used for guiding sewage discharged from the top of the water suction pipe to the outer side of the circumference.

Further preferably, the screw impeller is a single screw impeller or a double screw impeller.

Preferably, the water stirring mechanism comprises a paddle rod fixedly connected with the side wall of the second driving shaft and extending to the outer side of the water suction pipe in the radial direction, wherein a plurality of paddle rods are uniformly distributed on the circumferential side wall of the second driving shaft, and the horizontal position of each paddle is lower than the horizontal position of the top of the water suction pipe.

Preferably, the radial lengths of two adjacent paddle rods are different, and any paddles are located at the same horizontal height.

Preferably, the floating mechanism comprises a support which is detachably and fixedly connected with the outer shell of the driving mechanism, the support is provided with a plurality of free ends which uniformly and outwards diverge, any free end is fixedly connected with a floating ball for supporting the aeration device, the floating mechanism further comprises a connecting rod assembly which is fixedly connected with the support, and the other end of the connecting rod assembly is connected with the outer side wall of the water suction pipe.

As the supporting capability of the utility model can be improved, the effective supporting of aeration devices with different qualities can be satisfied, the supporting range is enlarged, preferably, the floating ball comprises an upper hemisphere and a lower hemisphere which are buckled with each other, and an air bag arranged in a cavity formed by buckling the upper hemisphere and the lower hemisphere, and the air bag is communicated with an air source through an air charging pipe.

In order to better realize buoyancy adjustment of the floating ball, preferably, the side wall of the opening of the upper hemisphere turns outwards to form an outer ring lip, the side wall of the opening of the lower hemisphere turns inwards to form an inner ring lip, the outer ring lip and the inner ring lip form a buckling structure, the air bag is provided with an opening, the opening is fixedly and hermetically connected with the opening of the upper hemisphere, and the air bag is made of elastic rubber materials.

The beneficial effects are that:

according to the utility model, the single motor double-shaft driving is adopted, and the lifting driving of water and the stirring driving of the water are realized, so that the circulating aeration of sewage in the aeration tank is realized, the condition that the existing aeration device can only perform aeration on sewage at a single position is avoided, and the sewage aeration efficiency is further improved.

According to the utility model, the sewage at any position of the sewage tank can be lifted to the water stirring mechanism through the water absorbing mechanism, so that the sewage can be fully contacted with air, the oxygen content of the sewage is increased, the purpose of aeration is achieved, and the problems that the sewage close to the aeration device can only be fully aerated when the existing aeration device is used for aerating on the water surface, the sewage at other positions of the aeration tank cannot be fully aerated, and the sewage aeration is uneven and insufficient are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is an isometric view of the structure of the present utility model.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a cross-sectional view taken along section symbol A-A in fig. 3.

Fig. 5 is an internal structural view of the present utility model.

Fig. 6 is a schematic view of the internal structure of the floating ball.

Fig. 7 is a schematic diagram of the present utility model in a top view for stirring water.

Fig. 8 is a schematic view showing a state of water absorption according to the present utility model in front view.

Fig. 9 is a schematic view of the present utility model in front view for stirring water.

In the figure: 1-a bracket; 2-an outer shell; a 3-speed variator; 4-driving a motor; 5-a first drive shaft; 6-a second drive shaft; 7-a paddle rod; 8-paddles; 9-a helical impeller; 10-a water suction pipe; 11-a connecting rod assembly; 12-a diversion cover; 13-an inflation tube; 14-floating ball; 141-upper hemisphere; 142-an outer annular lip; 143-lower hemisphere; 144-inner ring lip; 145-balloon.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that a product of the application conventionally puts in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1:

the sewage aeration device comprises a driving mechanism and a water stirring mechanism which are in driving connection, a floating mechanism for supporting the driving mechanism and the water stirring mechanism, and a water absorbing mechanism which is in driving connection with the driving mechanism and is used for lifting sewage at the bottom of an aeration tank to the water stirring mechanism for aeration, wherein the driving mechanism is combined with the water stirring mechanism, and the water absorbing mechanism is shown in the figures 1-4 of the specification; the output end of the driving mechanism is provided with a first driving shaft 5 and a second driving shaft 6 which are coaxially arranged, the second driving shaft 6 is rotatably sleeved on the first driving shaft 5 in a hollow structure, the first driving shaft 5 is in driving connection with the water absorbing mechanism, and the second driving shaft 6 is in driving connection with the water stirring mechanism.

Working principle:

the driving mechanism is used as a power source of the aeration device and is used for driving the water stirring mechanism and the water absorbing mechanism, and the floating mechanism can stably float in the aeration tank by utilizing the self buoyancy to support the whole aeration device. The water absorption mechanism is driven by the first driving shaft 5 to rotate at a high speed under the action of the driving mechanism, so that sewage at the bottom of the aeration tank or at other positions is sucked and extracted to a position higher than the water surface of the aeration tank and naturally falls down, the suction position and the discharge position of the sewage are not the same, and the purpose of cyclic aeration is achieved. The water stirring mechanism is positioned at the position where the water absorbing mechanism discharges sewage to stir the sewage at a high speed, so that the sewage is changed into tiny water drops which are fully contacted with air and then naturally fall into the aeration tank, and a complete aeration process is completed, so that the oxygen content of the sewage is increased.

In this embodiment, the elongated aeration tank is taken as an example for explanation, when the aeration device is installed, the aeration device can be installed at a position close to the middle of the aeration tank, then the suction end of the water absorbing mechanism can be installed at a position close to the bottom of the two ends of the sewage tank through the pipeline, and then the flow direction of sewage flows from the bottoms of the two ends of the aeration tank to the middle of the aeration tank, so that the purpose of circularly aerating sewage in the aeration tank in the aeration process is achieved, and the oxygen content of the sewage is uniformly increased. Of course, the above installation mode only provides one mode of the alternatives of the embodiment, and other layouts can be performed according to the actual structure of the aeration tank and the number of the aeration devices. Because the lower end of the water absorbing mechanism is a position of the potential sewage pool near the bottom, and aeration is performed on the surface of the sewage pool, no matter whether various mounting modes are adopted, no matter whether other pipelines are lengthened or the position of a sewage suction point is changed, the sewage absorbing mechanism can avoid stirring sewage at the same position, and can effectively improve the sewage aeration efficiency. It should be noted that the driving mechanism includes a driving motor 4 and a transmission 3, the first driving shaft 5 may be directly connected to the output shaft of the driving motor 4, the output shaft of the transmission 3 is in driving connection with the second driving shaft 6, in this way, the transmission 3 may be implemented only through a gear set, but for best effect, the first driving shaft 5 and the second driving shaft 6 preferably use different rotation speeds, and the rotation speed of the first driving shaft 5 should be higher than that of the second driving shaft 6. The transmission 3 may comprise means for increasing the rotational speed in driving connection with the first drive shaft 5, provided that the output torque of the drive motor 4 is allowed. The reason is that the resistance of the water stirring mechanism is large, larger torque output is needed for driving, the resistance of the water absorbing mechanism is small, and higher rotating speed output is needed for improving water flow. After the above disclosure, a person skilled in the art may flexibly adapt to achieve a combination of different specific parameters. The transmission 3 is understood to be a fixed gear box, or a combination of two separate gear boxes for speed increase and speed decrease, which are driven by the same drive motor 4. Of course, as a structure for facilitating installation, the first driving shaft 5 and the second driving shaft 6 may be coaxially arranged, for example, the first driving shaft 5 positioned inside may be a conventional solid shaft, the second driving shaft 6 may be a hollow shaft sleeved on the first driving shaft 5, and differential rotation is realized between the first driving shaft 5 and the second driving shaft 6 by arranging bearings. Of course, the above description is only one of the preferred embodiments, and those skilled in the art can implement it by other prior art techniques.

Example 2:

the present embodiment is one of the preferred embodiments of the present application, and based on the structure and principle of embodiment 1, this embodiment is further described in detail with respect to a water absorbing mechanism, and as shown in fig. 4 and 5, the water absorbing mechanism includes a water absorbing tube 10 fixedly connected with the floating mechanism and coaxially disposed with the first driving shaft 5, a spiral impeller 9 fixedly connected with the first driving shaft 5 is disposed in the water absorbing tube 10, an outer diameter of the spiral impeller 9 is adapted to an inner diameter of the water absorbing tube 10, and a flow guiding cover 12 fixedly disposed on the first driving shaft 5 for guiding the sewage discharged from the top of the water absorbing tube 10 to the outside of circumference. The spiral impeller 9 is a single-spiral impeller or a double-spiral impeller. The spiral impeller 9 has a larger flow passage compared with the existing centrifugal pump no matter the single spiral impeller or the double spiral impeller is adopted, so that the flow rate of water can be greatly increased, and the problem of blockage is not worried. Further, because the application scene of this application only need with sewage promote to surpass the surface of water then fall naturally on stirring water mechanism can, consequently, this application need not be as high as current water pump, this application at the aeration process, the lift only need surpass 20 centimetres can, consequently, the promotion mode that adopts screw impeller 9 has resistance little, the flow is big, less power motor can drive, the two aspects compatibility of efficiency and energy consumption have been realized, the state when promoting sewage is as shown in fig. 8, stir the water state as shown in fig. 7 and fig. 9.

Example 3:

this embodiment is further optimized based on embodiment 2, and as shown in fig. 1-5 in conjunction with the description, the water stirring mechanism includes a paddle rod 7 fixedly connected with a side wall of the second driving shaft 6 and extending radially to an outer side of the water suction pipe 10, where paddles 8 are connected, and the paddle rod 7 has a plurality of paddle rods and is uniformly distributed on a circumferential side wall of the second driving shaft 6, and a horizontal position of the paddles 8 is lower than a horizontal position of a top of the water suction pipe 10.

In this embodiment, the radial lengths of two adjacent paddle rods 7 are different, and any paddle 8 is located at the same horizontal height. As shown in fig. 2 and 7, the paddle rods 7 with different lengths can stir sewage at different positions, so that the area for stirring the sewage can be increased, and the water stirring efficiency is improved.

In this embodiment, the floating mechanism includes a support 1 detachably and fixedly connected to the outer casing 2 of the driving mechanism, the support 1 has a plurality of free ends that uniformly and outwardly diverge, any free end is fixedly connected with a floating ball 14 for supporting the aeration device, and further includes a connecting rod assembly 11 fixedly connected to the support 1, and the other end of the connecting rod assembly 11 is connected to the outer side wall of the water suction pipe 10.

As an effective support for the aeration device with different quality, the supporting capability of the present utility model can be improved, the supporting range is enlarged, and referring to fig. 6, the floating ball 14 in this embodiment includes an upper hemisphere 141 and a lower hemisphere 143 that are fastened to each other, and an air bag 145 disposed in a cavity formed by fastening the upper hemisphere 141 and the lower hemisphere 143, and the air bag 145 is communicated with an air source through the air tube 13.

In order to better realize buoyancy adjustment of the floating ball 14, preferably, the side wall of the opening of the upper hemisphere 141 is turned outwards to form an outer ring lip 142, the side wall of the opening of the lower hemisphere 143 is turned inwards to form an inner ring lip 144, the outer ring lip 142 and the inner ring lip 144 form a buckling structure, the air bag 145 is provided with an opening, the opening is fixedly and hermetically connected with the opening of the upper hemisphere 141, and the air bag 145 is made of elastic rubber material. The floating ball 14 is inflated through the inflation tube 13, so that the air bag 145 is in different inflation degrees, the volume of the floating ball 14 is changed, and the floating mechanism adjusts different buoyancy according to different masses.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (8)

1. The utility model provides a sewage aeration equipment, includes actuating mechanism and the stirring mechanism of drive connection to and be used for supporting actuating mechanism and the floating mechanism who stirs the mechanism of water, its characterized in that: the sewage treatment device also comprises a water absorption mechanism which is in driving connection with the driving mechanism and is used for lifting sewage at the bottom of the aeration tank to the water stirring mechanism for aeration; the output end of the driving mechanism is provided with a first driving shaft (5) and a second driving shaft (6) which are coaxially arranged, the second driving shaft (6) is rotationally sleeved on the first driving shaft (5) in a hollow structure, the first driving shaft (5) is in driving connection with the water absorbing mechanism, and the second driving shaft (6) is in driving connection with the water stirring mechanism.

2. A sewage aeration device according to claim 1, wherein: the water suction mechanism comprises a water suction pipe (10) fixedly connected with the floating mechanism and coaxially arranged on the first driving shaft (5), a spiral impeller (9) fixedly connected with the first driving shaft (5) is arranged in the water suction pipe (10), the outer diameter of the spiral impeller (9) is matched with the inner diameter of the water suction pipe (10), and a guide cover (12) fixedly arranged on the first driving shaft (5) and used for guiding sewage discharged from the top of the water suction pipe (10) to the outer side of the circumference.

3. A sewage aeration device according to claim 2, wherein: the spiral impeller (9) is a single-spiral impeller or a double-spiral impeller.

4. A sewage aeration device according to any one of claims 2 to 3, wherein: the water stirring mechanism comprises a paddle rod (7) fixedly connected with the side wall of the second driving shaft (6) and extending to the outer side of the water suction pipe (10) along the radial direction, paddles (8) are connected to the paddle rod (7), a plurality of paddle rods (7) are uniformly distributed on the circumferential side wall of the second driving shaft (6), and the horizontal position of each paddle (8) is lower than the horizontal position of the top of the water suction pipe (10).

5. A sewage aeration device according to claim 4, wherein: the radial lengths of two adjacent paddle rods (7) are different, and any paddle (8) is located at the same horizontal height.

6. A sewage aeration device according to claim 5, wherein: the floating mechanism comprises a support (1) which is detachably and fixedly connected with an outer shell (2) of the driving mechanism, wherein the support (1) is provided with a plurality of free ends which uniformly and outwards diverge, any free end is fixedly connected with a floating ball (14) used for supporting the aeration device, the floating mechanism further comprises a connecting rod assembly (11) which is fixedly connected with the support (1), and the other end of the connecting rod assembly (11) is connected with the outer side wall of the water suction pipe (10).

7. A sewage aeration device according to claim 6, wherein: the floating ball (14) comprises an upper hemisphere (141) and a lower hemisphere (143) which are buckled with each other, and an air bag (145) arranged in a cavity formed by buckling the upper hemisphere (141) and the lower hemisphere (143), and the air bag (145) is communicated with an air source through an inflation tube (13).

8. A sewage aeration device according to claim 7, wherein: the opening side wall of the upper hemisphere (141) is outwards turned to form an outer ring lip (142), the opening side wall of the lower hemisphere (143) is inwards turned to form an inner ring lip (144), the outer ring lip (142) and the inner ring lip (144) form a buckling structure, the air bag (145) is provided with an opening, the opening is fixedly and hermetically connected with the opening of the upper hemisphere (141), and the air bag (145) is made of elastic rubber materials.

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