Aeration tank for wastewater treatment

Abstract

The utility model discloses an aeration tank for wastewater treatment, which comprises a tank body, a breather pipe is distributed at the bottom of the tank body, an air pump communicated with the breather pipe is arranged outside the tank body, and a plurality of aeration heads are distributed on the breather pipe at equal intervals along the extension direction of the breather pipe; the aeration head comprises a shell communicated with the ventilation pipe and an air disc arranged in the shell, the top of the shell is open, a cover plate covers the top of the shell in a sealing mode, the cover plate is rotationally connected with the shell, the cover plate is provided with an air bag communicated with the ventilation pipe, and when the air bag is inflated and deflated, the cover plate is driven to be opened and closed through buoyancy change of the air bag. When the aeration tank is not used, the cover plate covers the shell, and the air disc is sealed in the shell, so that the quantity of sediments accumulated on the air disc is reduced, the probability that the air disc is blocked is reduced, and the aeration effect of the aeration tank is improved.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to an aeration tank for wastewater treatment. Background Technology

[0002] The production of electroplated wires includes steps such as electroplating and cleaning, which generates a large amount of wastewater. Direct discharge of this wastewater will pollute the environment, so a series of treatments are required to meet discharge standards. In treating electroplating wastewater, the airflow and water agitation generated in the aeration tank ensure thorough mixing of the wastewater with the treatment agents, improving the treatment effect.

[0003] The aeration devices inside existing aeration tanks are usually directly exposed to the outside. During the wastewater treatment process, the sediment generated will be directly deposited on the air disc of the aeration device. Especially when the air disc stops aeration, the accumulation of a large amount of sediment will block the air holes of the air disc, resulting in a reduction in the air volume of the air disc and affecting the working effect of the aeration tank.

[0004] Therefore, it is necessary to improve the aeration tanks in the existing technology. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide an aeration tank for wastewater treatment, which improves the treatment effect of the aeration tank on sewage.

[0006] To achieve the above objectives, the specific technical solution of the aeration tank for wastewater treatment of this utility model is as follows:

[0007] An aeration tank for wastewater treatment includes a tank body with vent pipes distributed at the bottom of the tank body. An air pump connected to the vent pipes is installed outside the tank body. Multiple aeration heads are evenly distributed along the extension direction of the vent pipes. Each aeration head includes a shell connected to the vent pipes and an air disc disposed inside the shell. The top of the shell is open, and a cover plate is sealed on the top of the shell. The cover plate is rotatably connected to the shell. An air bladder connected to the vent pipes is provided on the cover plate. When the air bladder is inflated or deflated, the cover plate is opened and closed by the change in buoyancy of the air bladder.

[0008] Preferably, the bottom of the outer casing is provided with an installation pipe that is detachably connected to the vent pipe, and the installation pipe is provided with a backflow preventer.

[0009] Preferably, the anti-reverse unit includes a tubular sealing plug, which is coaxially slidably disposed inside the mounting tube. One end of the sealing plug is connected to the inner wall of the mounting tube through an elastic element, and the other end of the sealing plug is connected to the airbag through an air supply pipe. The side wall of the sealing plug is sealed to the inner wall of the mounting tube, and the side wall of the sealing plug is provided with multiple air inlets.

[0010] Preferably, the gas supply pipe is a corrugated flexible hose.

[0011] Preferably, a sealing ring is provided around the four sides of the opening at the top of the outer casing, and the cover plate is sealed to the outer casing through the sealing ring.

[0012] Preferably, the cover plate is a circular structure assembled from multiple fan-shaped unit plates, and each unit plate is rotatably connected to the outer shell.

[0013] Preferably, the unit plate has one arc-shaped edge and two radial edges, one end of a rotating rod is fixedly connected to the arc-shaped edge, the other end of the rotating rod is hinged to the side wall of the outer shell, and an elastic reset member is provided between the rotating rod and the outer shell.

[0014] Preferably, the airbag has an elongated structure and is distributed on the two radial sides of the unit plate.

[0015] The aeration tank for wastewater treatment of this utility model has the following advantages: When the aeration tank is not in use, the cover plate covers the outer shell, sealing the air plate inside the shell, reducing the amount of sediment accumulating on the air plate, lowering the probability of air plate blockage, and improving the aeration effect of the aeration tank; When the aeration tank is in normal use, the gas inside the vent pipe fills the air bladder, causing the air bladder to expand. Under the action of the buoyancy of the air bladder, the cover plate opens upward, allowing the air plate to vent out normally without the need for additional power to open the cover plate, thus improving the convenience of using the aeration tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the aeration tank of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the aeration head of this utility model;

[0018] Figure 3 This is a structural schematic diagram of the cover plate of this utility model in the open state;

[0019] Figure 4 This is a cross-sectional view of the aeration head of this utility model;

[0020] Figure 5 This is a schematic diagram of the outer shell of this utility model;

[0021] Figure 6 This is a schematic diagram of the sealing plug of this utility model;

[0022] Figure 7 This is a schematic diagram of the connection structure between the unit plate and the airbag of this utility model;

[0023] The markings in the diagram are as follows: 101, pool body; 102, air pump; 103, air pipe; 2, aeration head; 21, outer shell; 211, mounting pipe; 22, cover plate; 221, unit plate; 23, air supply pipe; 24, air bag; 25, air disc; 26, sealing plug; 261, air inlet; 27, spring; 28, rotating rod; 29, elastic rope. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0025] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the aeration tank and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] like Figure 1-4 As shown, an aeration tank for wastewater treatment includes a tank body 101. Air pipes 103 are distributed at the bottom of the tank body 101. An air pump 102 connected to the air pipes 103 is installed outside the tank body 101. Multiple aeration heads 2 are evenly distributed along the extension direction of the air pipes 103. Each aeration head 2 includes a shell 21 connected to the air pipes 103 and an air disc 25 disposed inside the shell 21. The top of the shell 21 is open, and a cover plate 22 is sealed on the top of the shell 21. The cover plate 22 is rotatably connected to the shell 21. An air bladder 24 connected to the air pipes 103 is provided on the cover plate 22. When the air bladder 24 is inflated or deflated, the change in buoyancy of the air bladder 24 drives the cover plate 22 to open and close.

[0027] The electroplating wire production line includes electroplating and cleaning steps, which generate a large amount of wastewater. To treat this wastewater, chemical agents are added to cause harmful substances to precipitate. During this process, the airflow and water flow generated in the aeration tank ensure thorough mixing of the wastewater and treatment agents, improving the treatment effect. When the aeration tank is in use, the air pump 102 compresses air through the vent pipe 103 and introduces it into the outer shell 21 of the aeration head 2. Some air enters the air bladder 24, causing it to expand and increase buoyancy. Under the buoyancy of the air bladder 24, the cover plate 22 is pulled upwards, thus opening the cover plate 22. Once the air pressure inside the air bladder 24 is balanced with the air pressure inside the outer shell 21, the air bladder 24... When the aeration tank stops operating, the air pump 102 stops, and the air pressure inside the outer shell 21 decreases. Under the elasticity of the air bladder 24, the internal air is discharged. At this time, the air bladder 24 contracts and the buoyancy decreases. When the buoyancy of the air bladder 24 is less than the weight of the cover plate 22, the cover plate 22 flips downward under the action of gravity, so that the cover plate 22 covers the opening at the top of the outer shell 21. At this time, the cover plate 22 seals the air bladder 25 inside the outer shell 21, thereby reducing the accumulation of sediment on the air bladder 25, reducing the probability of the air bladder 25 becoming blocked, so as to ensure the aeration effect of the aeration plate and improve the treatment effect of the aeration tank on wastewater.

[0028] Compared with the existing aeration head 2 in the aeration tank, the cover plate 22 of this aeration head 2 is driven to open and close by the air bladder 24, and the air bladder 24 is controlled by the air pump 102 to control the inflation and deflation of air. There is no need to set up an additional control device for opening and closing the cover plate 22, which reduces the production cost of the equipment and improves the energy-saving performance of the equipment. When the cover plate 22 is opened, it flips upward. After the cover plate 22 is opened, the area directly above the air plate 25 is small, which can reduce the impact on the aeration of the air plate 25 and further improve the aeration effect of the aeration tank.

[0029] Further improvements include, for example Figure 4-6 As shown, the bottom of the outer casing 21 is provided with an installation tube 211 that is detachably connected to the vent tube 103. An anti-reverse unit is provided inside the installation tube 211. The anti-reverse unit includes a tubular sealing plug 26, which is coaxially slidably disposed inside the installation tube 211. One end of the sealing plug 26 is connected to the inner wall of the installation tube 211 through an elastic element, which can be a spring 27. The other end of the sealing plug 26 is connected to the airbag 24 through an air supply tube 23, which is a corrugated hose. The side wall of the sealing plug 26 is sealed to the inner wall of the installation tube 211. Multiple air inlets 261 are provided on the side wall of the sealing plug 26.

[0030] Specifically, the vent pipe 211 has an insertion interface, and the mounting pipe 211 is inserted into the insertion interface to form a seal, thereby realizing a detachable connection between the aeration head 2 and the vent pipe 103, improving the convenience of equipment maintenance; the sealing plug 26 is slidably sealed to the mounting pipe 211. When the aeration tank stops operating, under the action of the spring 27, the sealing plug 26 moves into the mounting pipe 211, at which time the air inlet 261 is in a closed state, so that the outer shell 21 and the vent pipe 103 are not connected, and wastewater cannot enter the interior of the vent pipe 103, reducing the corrosion of the vent pipe 103 and reducing the equipment failure rate; when the aeration tank starts, the air pump 102 runs, causing the air pressure inside the vent pipe 103 to gradually increase. When the air pressure on the sealing plug 26 is less than the spring force of the spring 27, the sealing plug 26 is in the mounting pipe 211. Inside the air chamber 21, air enters the airbag 24 after passing through the sealing plug 26 and the air supply pipe 23, inflating the airbag 24 and opening the cover 22. When the air pressure on the sealing plug 26 is greater than the elastic force of the spring 27, the sealing plug 26 is pushed out of the mounting pipe 211, opening the air inlet 261. At this time, the air inside the vent pipe 103 can enter the outer shell 21 through the sealing plug 26 and the air inlet 261, allowing the air plate 25 to aerate normally. Through the above settings, the opening sequence of the cover 22 and the aeration sequence of the air plate 25 are controlled, reducing the impact of the cover 22 on the normal aeration of the air plate 25. At the same time, the spring 27 can also be used to adjust the air pressure inside the airbag 24, preventing the airbag 24 from rupturing due to excessive internal air pressure. After aeration is completed, the spring 27 pulls the sealing plug 26 back to its original position.

[0031] Further improvements include, for example Figure 3 and 5 As shown, sealing rings are provided around the four sides of the opening at the top of the outer casing 21, and the cover plate 22 is sealed to the outer casing 21 through the sealing rings. The sealing rings reduce the gap between the cover plate 22 and the outer casing 21, reducing the probability of sediment entering the interior of the outer casing 21 and clogging the air plate 25.

[0032] Further improvements include, for example Figure 2 and 3 As shown, the cover plate 22 is a circular structure composed of multiple fan-shaped unit plates 221, and each unit plate 221 is rotatably connected to the outer shell 21.

[0033] Specifically, dividing the cover plate 22 into multiple unit plates 221 reduces the weight of a single cover plate 22, reduces the inflation volume of the airbag 24 when the cover plate 22 is opened, speeds up the opening of the unit plates 221, and reduces the area of ​​the unit plates 221, thus reducing the impact of water flow on the unit plates 221 and improving the stability of the unit plates 221.

[0034] Further improvements include, for example Figure 7As shown, the unit plate 221 has one arc-shaped edge and two radial edges. One end of the rotating rod 28 is fixedly connected to the arc-shaped edge. The other end of the rotating rod 28 is hinged to the side wall of the housing 21 shown. An elastic reset member is provided between the rotating rod 28 and the housing 21.

[0035] Specifically, the elastic reset component is an elastic rope 29. Hooks can be provided on the rotating rod 28 and the outer casing 21 to connect the two ends of the elastic rope 29. One end of the rotating rod 28 is hinged to the outer casing 21, allowing the unit plate 221 to rotate around the hinge point between the rotating rod 28 and the outer casing 21. This increases the rotation range of the unit plate 221, allowing it to move away from the area directly above the air disc 25 after opening, thereby reducing the obstruction of the unit plate 221 to the aeration of the air disc 25 and improving the aeration effect of the air disc 25. When the aeration tank is not in use, the elastic force of the elastic rope 29 can pull the rotating rod 28 to reset, thereby resetting the unit plate 221 and ensuring a tight fit between the unit plate 221 and the outer casing 21, improving the sealing effect between the unit plate 221 and the outer casing 21.

[0036] Further improvements include, for example Figure 7 As shown, the airbag 24 is a long strip structure, and the airbag 24 is distributed on the two radial sides of the unit plate 221.

[0037] Specifically, the airbag 24 is positioned on the radial side. Based on the lever principle, the airbag 24 has a longer lever arm, allowing it to drive the cover plate 22 to open more smoothly. Furthermore, during the inflation process, the airbags 24 can push against each other, providing an initial force for the opening of the cover plate 22 and further improving the smoothness of the opening. When the airbag 24 contracts, it can also achieve a seal between two adjacent unit plates 221, enhancing the protection effect on the air plate 25.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An aeration tank for wastewater treatment, comprising a tank body (101), wherein air pipes (103) are distributed at the bottom of the tank body (101), and an air pump (102) connected to the air pipes (103) is provided outside the tank body (101), characterized in that: Multiple aeration heads (2) are evenly distributed along the extension direction of the vent pipe (103); The aeration head (2) includes a shell (21) connected to the air pipe (103) and an air plate (25) disposed inside the shell (21). The top of the shell (21) is open, and a cover plate (22) is provided on the top of the shell (21). The cover plate (22) is rotatably connected to the shell (21). The cover plate (22) is provided with an air bladder (24) connected to the air pipe (103). When the air bladder (24) is inflated or deflated, the cover plate (22) is opened and closed by the change in buoyancy of the air bladder (24).

2. The aeration tank for wastewater treatment according to claim 1, characterized in that, The bottom of the outer casing (21) is provided with an installation pipe (211) that is detachably connected to the vent pipe (103), and the installation pipe (211) is provided with a backflow preventer.

3. The aeration tank for wastewater treatment according to claim 2, characterized in that, The anti-reverse unit includes a tubular sealing plug (26), which is coaxially slidably disposed inside the mounting tube (211). One end of the sealing plug (26) is connected to the inner wall of the mounting tube (211) through an elastic element, and the other end of the sealing plug (26) is connected to the airbag (24) through an air supply tube (23). The side wall of the sealing plug (26) is sealed to the inner wall of the mounting tube (211), and the side wall of the sealing plug (26) is provided with multiple air inlets (261).

4. The aeration tank for wastewater treatment according to claim 3, characterized in that, The gas supply pipe (23) is a corrugated hose.

5. The aeration tank for wastewater treatment according to claim 1, characterized in that, The top opening of the outer shell (21) is provided with a sealing ring around its four sides, and the cover plate (22) is sealed to the outer shell (21) through the sealing ring.

6. The aeration tank for wastewater treatment according to claim 1, characterized in that, The cover plate (22) is a circular structure composed of multiple fan-shaped unit plates (221), and each unit plate (221) is rotatably connected to the outer shell (21).

7. The aeration tank for wastewater treatment according to claim 6, characterized in that, The unit plate (221) has an arc-shaped edge and two radial edges. One end of a rotating rod (28) is fixedly connected to the arc-shaped edge. The other end of the rotating rod (28) is hinged to the side wall of the outer shell (21). An elastic reset member is provided between the rotating rod (28) and the outer shell (21).

8. The aeration tank for wastewater treatment according to claim 7, characterized in that, The airbag (24) is a long strip structure, and the airbag (24) is distributed on the two radial sides of the unit plate (221).

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