Underwater stirrer with aeration function for sewage treatment

Abstract

The utility model discloses an underwater stirrer with an aeration function for sewage treatment, and relates to the technical field of sewage treatment. The sewage treatment device comprises a shell, a stirring assembly is rotatably connected to the interior of the shell, an aeration assembly is fixedly connected to the interior of the shell, a sliding assembly is slidably connected to the outer surface of the shell, an auxiliary assembly is fixedly connected to the outer surface of the sliding assembly, and the stirring assembly is used for mixing sludge and sewage; the aeration assembly is used for preventing suspended solids in the tank from sinking and strengthening contact between organic matters in the tank and microorganisms and dissolved oxygen. Through the connection of the shell and the sliding assembly, when the sliding assembly extends out of the shell, the sliding assembly abuts against the side wall of the sewage pool and supports the shell, at the moment, under the limiting action of the sliding assembly and the side wall of the sewage pool, the shell cannot incline, the shell does not need to be supported by sludge, and therefore when the sludge plane descends, the sliding assembly is not prone to falling. And the shell does not incline, so that the normal work is prevented from being influenced.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to an underwater mixer with aeration function for wastewater treatment. Background Technology

[0002] In wastewater treatment, thoroughly mixing raw wastewater and activated sludge in a wastewater tank is a common method. In practice, due to the weight of the sludge, it's necessary to continuously stir up the sludge at the bottom to mix it with the wastewater. After the sludge floats to the surface, the wastewater tank is aerated to prevent suspended matter from settling and to enhance the contact between organic matter, microorganisms, and dissolved oxygen. This ensures that microorganisms in the tank can oxidize and decompose the organic matter in the wastewater under conditions of sufficient dissolved oxygen.

[0003] Chinese patent CN214990553U discloses an underwater agitator for wastewater treatment that facilitates sludge removal, relating to the technical field of wastewater treatment. The underwater agitator includes an agitator shell and a submersible pump. Support legs are fixedly connected to the four corners of the lower surface of the agitator shell. The bottom of the agitator shell is open. A horizontally extending strip-shaped hole is formed in the top wall of the agitator shell. An agitator rod is movably connected between the left and right walls of the agitator shell via bearings. Evenly distributed agitator blades are fixedly connected to the agitator rod. A motor housing is fixedly connected to the right wall of the agitator shell, and a drive motor is fixedly installed inside the motor housing. The right end of the agitator rod extends into the motor housing and is fixedly connected to the output end of the drive motor.

[0004] Traditional mixing mechanisms often employ simple stirring. While the sludge can be stirred up during the process, the effective range is small, mainly concentrating at the bottom of the wastewater tank, resulting in poor overall mixing. In the aforementioned document, the support legs elevate the mixing shell, and the sludge outside the mixing shell is rapidly replenished into the mixing shell under water pressure, forming a circulation between water and sludge in the anaerobic tank. However, the mixing shell is only supported by the support legs. When the sludge level decreases, the sludge level drops, which can easily cause the support legs and mixing shell to tilt, affecting normal operation.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes an underwater mixer with aeration function for sewage treatment, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to an underwater mixer with aeration function for wastewater treatment, comprising a shell, a stirring assembly rotatably connected inside the shell, an aeration assembly fixedly connected inside the shell, a sliding assembly slidably connected to the outer surface of the shell, and an auxiliary assembly fixedly connected to the outer surface of the sliding assembly. The stirring assembly is used to mix sludge and wastewater, the aeration assembly is used to prevent suspended matter in the tank from sinking and to enhance the contact between organic matter, microorganisms, and dissolved oxygen in the tank, the sliding assembly is used to limit the movement of the shell, and the auxiliary assembly is used to reduce the friction between the sliding assembly and the wastewater tank.

[0009] Furthermore, the stirring assembly includes a motor, which is fixedly connected inside the housing. A stirring shaft is fixedly connected to the output shaft of the motor, and the stirring shaft is rotatably connected inside the housing. Stirring blades are fixedly connected to the outer surface of the stirring shaft.

[0010] Furthermore, the aeration assembly includes an air inlet pipe, which is fixedly connected to the housing. An air pump is fixedly connected to the lower end of the air inlet pipe. A delivery pipe is fixedly connected to the outer surface of the air pump. Several exhaust holes are opened on the outer surface of the delivery pipe. The air pump is fixedly connected inside the housing.

[0011] Furthermore, the sliding assembly includes a screw, which is rotatably connected to the housing. A handwheel is fixedly connected to the outer surface of the screw, and a sliding frame is threadedly connected to the outer surface of the screw. The sliding frame is slidably connected to the housing.

[0012] Furthermore, the auxiliary component includes a connecting plate, the outer surface of which is threaded with bolts, the connecting plate is fixedly connected to the sliding frame by bolts, and the outer surface of the connecting plate is rotatably connected with casters.

[0013] Furthermore, a lifting lug is fixedly connected to the top of the housing.

[0014] Furthermore, a base column is fixedly connected to the bottom of the housing.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model connects the shell and the sliding component. When the sliding component extends out of the shell, it abuts against the side wall of the sewage tank and supports the shell. At this time, under the limiting effect of the sliding component and the side wall of the sewage tank, the shell cannot tilt. The shell does not need to rely on sludge for support. Therefore, when the sludge plane drops, the shell will not tilt, thus avoiding affecting normal operation.

[0017] 2. This utility model uses the connection between the sliding frame and the universal wheel. The universal wheel is located between the sliding frame and the side wall of the sewage tank. After the universal wheel abuts against the side wall of the sewage tank, it not only limits the housing, but also reduces the friction by rotating the universal wheel when the housing moves up and down or back and forth. This makes it easy to adjust the position of the housing so that the stirring blades and the vent can treat sewage sludge in different locations.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the external outline structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the shell structure of this utility model;

[0022] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 4 This is a partial structural schematic diagram of the present invention;

[0024] Figure 5 For the present utility model Figure 4 A schematic diagram of the structure at point B;

[0025] Figure 6 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point C.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Shell; 2. Mixing assembly; 201. Motor; 202. Mixing shaft; 203. Mixing blades; 3. Aeration assembly; 301. Air inlet pipe; 302. Air pump; 303. Delivery pipe; 304. Exhaust port; 4. Sliding assembly; 401. Screw; 402. Handwheel; 403. Sliding frame; 5. Auxiliary assembly; 501. Connecting plate; 502. Bolt; 503. Casters; 6. Lifting lug; 7. Base column. Detailed Implementation

[0028] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] Please see Figures 1-6 As shown, this utility model is an underwater mixer with aeration function for sewage treatment, including a shell 1. A stirring component 2 is rotatably connected inside the shell 1, and an aeration component 3 is fixedly connected inside the shell 1. A sliding component 4 is slidably connected to the outer surface of the shell 1, and an auxiliary component 5 is fixedly connected to the outer surface of the sliding component 4. The stirring component 2 is used to mix sludge and sewage. The aeration component 3 is used to prevent suspended matter in the pool from sinking and to enhance the contact between organic matter, microorganisms and dissolved oxygen in the pool. The sliding component 4 is used to limit the position of the shell 1. The auxiliary component 5 is used to reduce the friction between the sliding component 4 and the sewage pool.

[0031] The shell 1 is placed into the sewage tank. The sliding component 4 drives the auxiliary component 5 to move, so that the auxiliary component 5 abuts against the side wall of the sewage tank. The shell 1 continues to be lowered. At this time, the shell 1 slides in the sewage tank through the auxiliary component 5. After it is lowered into place, the stirring component 2 inside the shell 1 is activated. The stirring component 2 rotates to mix the sludge and sewage at the bottom of the sewage tank, so that the sludge and the pollutants at the bottom float to the surface. Then, oxygen is introduced into the bottom of the sewage tank through the aeration component 3, so that the pollutants can fully contact the oxygen and be oxidized and decomposed.

[0032] This utility model connects the housing 1 and the sliding component 4. When the sliding component 4 extends out of the housing 1, it abuts against the side wall of the sewage tank and supports the housing 1. At this time, under the limiting effect of the sliding component 4 and the side wall of the sewage tank, the housing 1 cannot tilt. The housing 1 does not need to rely on sludge for support. Therefore, when the sludge plane drops, the housing 1 will not tilt, thereby avoiding affecting normal operation.

[0033] In one embodiment, the stirring assembly 2 includes a motor 201, which is fixedly connected inside the housing 1. A stirring shaft 202 is fixedly connected to the output shaft of the motor 201. The stirring shaft 202 is rotatably connected inside the housing 1. A stirring blade 203 is fixedly connected to the outer surface of the stirring shaft 202.

[0034] When the motor 201 is started, the output shaft of the motor 201 rotates, which drives the stirring shaft 202 to rotate inside the housing 1. The stirring blades 203 on the stirring shaft 202 rotate accordingly. During the rotation, the stirring blades 203 come into contact with the sludge in the sewage tank, which can push the sludge to move and make it float in the sewage.

[0035] In one embodiment, the aeration assembly 3 includes an air inlet pipe 301, which is fixedly connected to the housing 1. An air pump 302 is fixedly connected to the lower end of the air inlet pipe 301. A delivery pipe 303 is fixedly connected to the outer surface of the air pump 302. A plurality of exhaust holes 304 are provided on the outer surface of the delivery pipe 303. The air pump 302 is fixedly connected inside the housing 1.

[0036] The upper end of the air inlet pipe 301 is connected to an oxygen supply cylinder or directly exposed to the air. When the air pump 302 is started, oxygen or air from the oxygen supply cylinder is drawn in and transported to the delivery pipe 303. The air is then discharged from the exhaust port 304 on the delivery pipe 303 so that it can fully contact the pollutants in the sewage tank for oxidation and decomposition.

[0037] In one embodiment, the sliding assembly 4 includes a screw 401, which is rotatably connected to the housing 1. A handwheel 402 is fixedly connected to the outer surface of the screw 401, and a sliding frame 403 is threadedly connected to the outer surface of the screw 401. The sliding frame 403 is slidably connected to the housing 1.

[0038] Rotate the handwheel 402, which drives the screw 401 to rotate. The rotation tendency of the sliding frame 403 on the screw 401 is blocked by the housing 1. At this time, the screw 401 can drive the sliding frame 403 to move, so that the sliding frame 403 extends out of the housing 1.

[0039] In one embodiment, the auxiliary component 5 includes a connecting plate 501, the outer surface of which is threaded with bolts 502, the connecting plate 501 is fixedly connected to the sliding frame 403 by bolts 502, and the outer surface of the connecting plate 501 is rotatably connected with casters 503.

[0040] The sliding frame 403 drives the connecting plate 501 to move, and the universal wheel 503 on the connecting plate 501 moves accordingly, so that the universal wheel 503 contacts the side wall of the sewage tank. At this time, when the housing 1 moves, the friction can be reduced by the rotation of the universal wheel 503.

[0041] In one embodiment, the top of the housing 1 is fixedly connected with a lifting lug 6.

[0042] There are multiple sets of lifting lugs 6. The lifting lugs 6 are designed to facilitate the movement of the housing 1 by lifting equipment, so that the housing 1 can be placed into or removed from the sewage tank.

[0043] In one embodiment, for the housing 1 described above, a bottom post 7 is fixedly connected to the bottom of the housing 1.

[0044] There are multiple sets of bottom columns 7. The bottom columns 7 are set to prevent the stirring blades 203 from contacting the hard bottom of the sewage tank. The bottom columns 7 are not used to support the shell 1, but indirectly play a role in protecting the stirring blades 203.

[0045] In summary, using the above-mentioned technical solution of this utility model, the housing 1 is lifted and brought close to the sewage tank by the lifting lug 6. Rotating the handwheel 402 on the housing 1 drives the screw 401 to rotate. The rotational tendency of the sliding frame 403 on the screw 401 is blocked by the housing 1. At this time, the screw 401 can drive the sliding frame 403 to move, causing the sliding frame 403 to extend outside the housing 1. The sliding frame 403 drives the connecting plate 501 to move, and the universal wheel 503 on the connecting plate 501 moves accordingly, causing the universal wheel 503 to contact the side wall of the sewage tank. At this time, the housing 1 moves downwards, and the rotation of the universal wheel 503 reduces friction until... After the bottom column at the bottom of the shell 1 comes into contact with the sludge, it stops moving. The motor 201 inside the shell 1 is started, and the output shaft of the motor 201 rotates. The output shaft of the motor 201 drives the stirring shaft 202 to rotate inside the shell 1. The stirring blades 203 on the stirring shaft 202 rotate accordingly. During the rotation, the stirring blades 203 come into contact with the sludge in the sewage tank, which can push the sludge to move and make it float in the sewage. The air pump 302 is started to draw in oxygen or air from the oxygen supply cylinder and deliver it to the delivery pipe 303. The air is discharged from the exhaust port 304 on the delivery pipe 303 so that it can fully contact the pollutants in the sewage tank for oxidation and decomposition.

[0046] Through the above technical solution, 1. By connecting the housing 1 and the sliding component 4, when the sliding component 4 extends out of the housing 1, it abuts against the side wall of the sewage tank and supports the housing 1. At this time, under the limiting effect of the sliding component 4 and the side wall of the sewage tank, the housing 1 cannot tilt. The housing 1 does not need to rely on sludge for support. Therefore, when the sludge plane drops, the housing 1 will not tilt, thus avoiding affecting normal operation; 2. By connecting the sliding frame 403 and the universal wheel 503, the universal wheel 503 is located between the sliding frame 403 and the side wall of the sewage tank. After the universal wheel 503 abuts against the side wall of the sewage tank, it not only limits the housing 1, but also reduces friction when the housing 1 moves up and down or back and forth by rotating the universal wheel 503. This makes it easy to adjust the position of the housing 1 so that the stirring blade 203 and the vent 304 can treat sewage sludge at different positions.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An underwater mixer with aeration function for wastewater treatment, comprising a shell (1), characterized in that, The shell (1) is rotatably connected to a stirring assembly (2), the shell (1) is fixedly connected to an aeration assembly (3), the outer surface of the shell (1) is slidably connected to a sliding assembly (4), and the outer surface of the sliding assembly (4) is fixedly connected to an auxiliary assembly (5). The stirring assembly (2) is used to mix sludge and sewage. The aeration assembly (3) is used to prevent suspended matter in the pool from sinking and to enhance the contact between organic matter, microorganisms and dissolved oxygen in the pool. The sliding assembly (4) is used to limit the shell (1). The auxiliary assembly (5) is used to reduce the friction between the sliding assembly (4) and the sewage pool.

2. The underwater mixer with aeration function for wastewater treatment according to claim 1, characterized in that, The stirring assembly (2) includes a motor (201), which is fixedly connected inside the housing (1). A stirring shaft (202) is fixedly connected to the output shaft of the motor (201). The stirring shaft (202) is rotatably connected inside the housing (1). A stirring blade (203) is fixedly connected to the outer surface of the stirring shaft (202).

3. The underwater mixer with aeration function for wastewater treatment according to claim 2, characterized in that, The aeration assembly (3) includes an air inlet pipe (301), which is fixedly connected to the housing (1). A vacuum pump (302) is fixedly connected to the lower end of the air inlet pipe (301). A delivery pipe (303) is fixedly connected to the outer surface of the vacuum pump (302). Several exhaust holes (304) are opened on the outer surface of the delivery pipe (303). The vacuum pump (302) is fixedly connected inside the housing (1).

4. The underwater mixer with aeration function for wastewater treatment according to claim 3, characterized in that, The sliding assembly (4) includes a screw (401), which is rotatably connected to the housing (1). A handwheel (402) is fixedly connected to the outer surface of the screw (401), and a sliding frame (403) is threadedly connected to the outer surface of the screw (401). The sliding frame (403) is slidably connected to the housing (1).

5. The underwater mixer with aeration function for wastewater treatment according to claim 4, characterized in that, The auxiliary component (5) includes a connecting plate (501), the outer surface of which is threaded with bolts (502), the connecting plate (501) is fixedly connected to the sliding frame (403) by bolts (502), and the outer surface of the connecting plate (501) is rotatably connected with casters (503).

6. The underwater mixer with aeration function for wastewater treatment according to claim 5, characterized in that, The top of the housing (1) is fixedly connected to a lifting lug (6).

7. The underwater mixer with aeration function for wastewater treatment according to claim 6, characterized in that, The bottom of the housing (1) is fixedly connected to a bottom column (7).

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