Aeration device for sewage treatment

Abstract

The utility model belongs to the technical field of sewage purification, and particularly discloses an aeration device for sewage treatment, which comprises an aerator, the aerator is communicated with a gas guide main pipe, the gas guide main pipe is communicated with a plurality of gas guide branch pipes, the plurality of gas guide branch pipes are all communicated with aerators, and the aerators are detachably connected to a bottom plate of a sewage treatment tank through connecting pieces. And the aerator is provided with a plurality of upward aeration holes. According to the utility model, the baffle is arranged, and the baffle is controlled to move up and down by utilizing the pressure of sewage and the air pressure in the air collecting bin, so that the aeration holes are opened during working and closed during idle, the risk of blockage of the aeration holes is effectively avoided, the cleaning and maintenance cost is reduced, and the aeration efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater purification technology, specifically relating to an aeration device for wastewater treatment. Background Technology

[0002] Aeration devices are commonly used equipment in wastewater treatment. Their function is to dissolve oxygen from the air into the water, promoting the growth and reproduction of aerobic microorganisms, thereby decomposing pollutants such as organic matter and ammonia nitrogen in the wastewater.

[0003] Patent CN218435216U discloses a wastewater treatment aeration device. The rotating aeration pipe drives a scraper disc to roll within the aeration chamber, which in turn rotates the scraper blades, thus scraping away the sludge adhering to the aeration pipe and preventing blockage. However, this method only removes sludge adhering to the outside of the aeration pipe. When the aeration pipe is idle, some fine sludge particles inevitably enter the pipe. The inside of the pipe is difficult to clean, easily causing blockages, resulting in high maintenance costs and low aeration efficiency.

[0004] Therefore, in order to solve the problems of sewage entering the aeration pipe, making cleaning difficult and aeration efficiency low in the existing technology, it is necessary to improve the structure of the aeration device to solve the current technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an aeration device for sewage treatment. By setting up a baffle, the pressure of the sewage and the air pressure in the air collection chamber are used to control the up and down movement of the baffle, so that the aeration holes open when working and close when idle, effectively avoiding the risk of clogging of the aeration holes, reducing cleaning and maintenance costs, and improving aeration efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an aeration device for sewage treatment, comprising an aerator, wherein the aerator is connected to a main air guide pipe, the main air guide pipe is connected to multiple branch air guide pipes, each of the multiple branch air guide pipes is connected to an aerator, and the aerator is detachably connected to the bottom plate of the sewage treatment tank via a connector.

[0007] The aerator includes an air collection chamber, the air guide branch pipe is connected to the air collection chamber, the top of the air collection chamber has an opening, and a baffle is slidably embedded in the opening.

[0008] Multiple aeration heads are spaced apart inside the gas collection chamber. Each aeration head is vertically fixed to the bottom plate of the gas collection chamber and slides through the baffle. Each aeration head has multiple aeration holes. The thickness of the baffle is greater than the diameter of the inlet end of the aeration hole. The inlet ends of the multiple aeration holes are connected to the gas collection chamber. The baffle can open or close the inlet ends of the aeration holes.

[0009] To better realize this utility model, the top of each aeration head is formed as a spherical surface.

[0010] To better realize this utility model, the aeration holes all enter from the side of the aeration head, gradually bend to be parallel to the central axis of the aeration head, and finally exit through the top surface of the aeration head.

[0011] To better realize this utility model, the diameter of the inlet end of the aeration hole is not less than the diameter of the outlet end.

[0012] To better realize this utility model, multiple elastic structures are connected between the bottom surface of the baffle and the bottom plate of the gas collection chamber, and the multiple elastic structures are evenly distributed in the gas collection chamber.

[0013] To better realize this utility model, the elastic structure includes a limiting sleeve, a limiting rod is slidably inserted into the limiting sleeve, a spring is connected to the bottom end of the limiting rod, and the other end of the spring is connected to the bottom surface of the limiting sleeve.

[0014] To better realize this utility model, at least one set of mutually symmetrical limiting blocks are fixedly connected to the side of the baffle, and the side wall of the gas collection chamber is provided with a limiting groove for the limiting blocks to move.

[0015] To better realize this utility model, the connector includes a first connecting segment and a second connecting segment. The first connecting segment is detachably connected to the second connecting segment. The other end of the first connecting segment is fixedly connected to the bottom surface of the gas collection chamber, and the other end of the second connecting segment is fixedly connected to the bottom plate of the sewage treatment tank.

[0016] Beneficial effects:

[0017] This invention utilizes a baffle plate, controlled by the pressure of the wastewater and the air pressure within the aeration chamber, to move the baffle plate up and down. When the aerator is started, oxygen delivered through the air guide pipe first enters the aeration chamber for storage, gradually increasing the air pressure. When the air pressure in the aeration chamber exceeds the pressure exerted on the baffle plate by the wastewater, the baffle plate moves upward along the aeration head, gradually leaking out of the aeration hole inlet. High-pressure oxygen is then ejected from the aeration hole and enters the wastewater, achieving aeration. When the aerator is turned off, the air pressure in the aeration chamber decreases, and the baffle plate moves downward along the aeration head, blocking the aeration hole inlet and preventing wastewater from entering the aerator. Through this design, the aerator is protected from wastewater during aeration and when idle, effectively preventing clogging of the aeration holes, reducing cleaning and maintenance costs, and improving aeration efficiency. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the aeration device of this utility model;

[0019] Figure 2This is a structural diagram of the internal structure of the aerator of this utility model;

[0020] Figure 3 This is a schematic diagram showing the position of the baffle relative to the aeration head when the aerator of this utility model is not in use;

[0021] Figure 4 This is a schematic diagram showing the position of the baffle relative to the aeration head during aeration in the aerator of this utility model.

[0022] In the diagram: 1. Aerator; 2. Main air supply pipe; 3. Branch air supply pipe; 4. Aerator; 41. Air collection chamber; 42. Baffle; 43. Aeration head; 44. Elastic structure; 441. Limiting sleeve; 442. Limiting rod; 443. Spring; 45. Limiting block; 46. Limiting groove; 5. Connecting piece; 51. First connecting section; 52. Second connecting section; 6. Aeration hole. Detailed Implementation

[0023] Example

[0024] like Figure 1 As shown, an aeration device for sewage treatment includes an aerator 1, an aerator 1 connected to a main air guide pipe 2, the main air guide pipe 2 connected to multiple branch air guide pipes 3, each of the multiple branch air guide pipes 3 connected to an aerator 4, and the aerator 4 detachably connected to the bottom plate of the sewage treatment tank via a connector 5.

[0025] like Figure 2 As shown, the aerator 4 includes an air collection chamber 41, and an air guide branch pipe 3 is connected to the air collection chamber 41. The top of the air collection chamber 41 has an opening, and a baffle 42 is slidably embedded in the opening. The thickness of the baffle 42 is greater than the diameter of the inlet end of the aeration hole 6. Multiple aeration heads 43 are distributed at intervals inside the air collection chamber 41. The multiple aeration heads 43 are all vertically fixed to the bottom plate of the air collection chamber 41. The multiple aeration heads 43 are all slidably connected to the baffle 42. Each aeration head 43 has multiple aeration holes 6. The inlet end of the aeration hole 6 is connected to the air collection chamber 41. The baffle 42 can open or close the inlet end of the aeration hole 6.

[0026] like Figure 3 As shown, when the aerator 1 is not started, the baffle 42 is positioned to block the inlet of the aeration hole 6 under the pressure of the sewage, so the sewage cannot enter the gas collection chamber 41 and can only stay in the aeration hole 6 at most.

[0027] like Figure 4As shown, when aerator 1 is started for aeration, the oxygen delivered through the air guide branch pipe 3 first enters the gas collection chamber 41 for storage. The air pressure in the gas collection chamber 41 gradually increases. When the air pressure in the gas collection chamber 41 is greater than the pressure exerted by the sewage on the baffle 42, the baffle 42 moves upward along the aeration head 43, and the inlet of the aeration hole 6 gradually leaks out. High-pressure oxygen is sprayed out from the aeration hole 6 and enters the sewage, thus achieving aeration. When aerator 1 is turned off, the air pressure in the gas collection chamber 41 decreases, and the baffle 42 moves downward along the aeration head 43 to block the inlet of the aeration hole 6, preventing sewage from entering the aerator 4. Through the above design, the aerator 4 will not enter sewage whether during aeration or when idle, effectively avoiding the clogging of the aeration hole 6, reducing cleaning and maintenance costs, and improving aeration efficiency.

[0028] The working principle of this utility model can be summarized as follows:

[0029] First, select a suitable location to install the aerator 1. Install the main air guide pipe 2 on the bottom plate of the sewage treatment tank, and connect multiple branch air guide pipes 3 to the main air guide pipe 2. The main air guide pipe 2 can be laid directly flat on the bottom plate of the sewage tank. Then, determine the installation depth of the aerator 4 according to the aeration requirements, and select appropriate connectors 5 to detachably fix multiple aerators 4 to the bottom plate of the sewage treatment tank. Finally, connect the branch air guide pipes 3 to the aerators 4 one by one, and sewage can be discharged into the sewage treatment tank. Start the aerator 1, and oxygen will be distributed through the main air guide pipe 2 to each branch air guide pipe 3, and then transported to the air collection chamber 41 by each branch air guide pipe 3. The air pressure in the air collection chamber 41 increases. As the baffle 42 moves upward, the inlet end of the aeration hole 6 opens, and oxygen is sprayed into the sewage through the aeration hole 6. When aeration stops, the air pressure in the air collection chamber 41 decreases. As the baffle 42 moves downward, the inlet end of the aeration hole 6 closes, aeration stops, and sewage is also prevented from entering the air collection chamber 41.

[0030] Preferably, the top of each aeration head 43 is formed as a spherical surface. When the aerator 4 is idle, even if debris in the sewage falls onto the aeration head 43, it will slide off the spherical end onto the baffle 42, reducing the risk of clogging of the aeration holes 6. Secondly, when the aerator 4 is working, it will cause disturbance in the water near the spherical end, clearing debris from the aeration head 43 and thus improving aeration efficiency.

[0031] Preferably, the aeration holes 6 all enter from the side of the aeration head 43 and gradually curve to be parallel to the central axis of the aeration head 43, eventually exiting through the top surface of the aeration head 43. When aeration is idle, some fine particles inevitably enter the aeration holes 6, but when the high-pressure oxygen in the gas collection chamber 41 is sprayed out from the aeration holes 6, the curved aeration holes 6 can smoothly carry the particles in the aeration holes 6 out by the high-pressure oxygen flow, keeping the aeration holes 6 unobstructed and improving aeration efficiency.

[0032] Preferably, the inlet diameter of the aeration hole 6 is not smaller than the outlet diameter. The outlet diameter is preferably set between 0.1-1 mm, which can generate fine oxygen bubbles, resulting in a high oxygen dissolution rate. At the same time, it can also prevent most of the sewage from entering the aeration hole 6 when the aerator 4 is idle. The inlet diameter is preferably larger than the outlet diameter, so that the gas inlet flow rate is greater than the outlet flow rate, which can increase the outlet pressure and improve the spraying effect of the accumulated dirt in the aeration hole 6.

[0033] Preferably, a plurality of elastic structures 44 are connected between the bottom surface of the baffle 42 and the bottom plate of the air collection chamber 41. The multiple elastic structures 44 are evenly distributed within the air collection chamber 41. Each elastic structure 44 includes a limiting sleeve 441, in which a limiting rod 442 is slidably inserted. A spring 443 is connected to the bottom end of the limiting rod 442, and the other end of the spring 443 is connected to the bottom surface of the limiting sleeve 441. By setting the elastic structure 44 to assist the baffle 42 in resetting, when the air pressure in the air collection chamber 41 decreases, and the pressure on the baffle 42 is insufficient due to the small amount of sewage treated, the pulling action of the spring 443 can still ensure that the baffle 42 resets in time to block the inlet of the aeration hole 6, preventing sewage from entering the aerator 4.

[0034] Preferably, at least one set of mutually symmetrical limiting blocks 45 are fixedly connected to the side of the baffle 42, and the side wall of the air collection chamber 41 is provided with limiting grooves 46 for the limiting blocks 45 to move. When the pressure in the air collection chamber 41 gradually increases, the baffle 42 will gradually move upward. By setting the limiting blocks 45, the baffle 42 can be prevented from moving upward continuously or even detaching from the air collection chamber 41, causing sewage to rush in and damaging the aerator 4.

[0035] Preferably, the connector 5 includes a first connecting section 51 and a second connecting section 52. The first connecting section 51 can be detachably connected to the second connecting section 52 by means of threaded connection, pin connection, flange connection, etc. The other end of the first connecting section 51 is fixedly connected to the bottom surface of the air collection chamber 41, and the other end of the second connecting section 52 is fixedly connected to the bottom plate of the sewage treatment tank. Through the detachable connection of the first connecting section 51 and the second connecting section 52, the aerator 4 can be conveniently installed at the bottom of the sewage treatment tank, and even if the aerator 4 malfunctions, it can be easily disassembled and repaired.

[0036] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An aeration device for wastewater treatment, characterized in that, Includes an aerator (1), the aerator (1) is connected to a main air guide pipe (2), the main air guide pipe (2) is connected to multiple air guide branch pipes (3), each of the multiple air guide branch pipes (3) is connected to an aerator (4), the aerator (4) is detachably connected to the bottom plate of the sewage treatment tank through a connector (5). The aerator (4) includes an air collection chamber (41), and the air guide branch pipe (3) is connected to the air collection chamber (41). The top of the air collection chamber (41) has an opening, and a baffle (42) is slidably embedded in the opening. Multiple aeration heads (43) are spaced apart inside the gas collection chamber (41). The multiple aeration heads (43) are vertically fixed to the bottom plate of the gas collection chamber (41). The multiple aeration heads (43) are slidably connected to the baffle (42). Each aeration head (43) is provided with multiple aeration holes (6). The thickness of the baffle (42) is greater than the diameter of the inlet end of the aeration hole (6). The inlet ends of the multiple aeration holes (6) are connected to the gas collection chamber (41). The baffle (42) can open or close the inlet end of the aeration hole (6).

2. The aeration device for wastewater treatment according to claim 1, characterized in that, The top of each of the aeration heads (43) is formed as a spherical surface.

3. The aeration device for wastewater treatment according to claim 1, characterized in that, The aeration holes (6) all enter from the side of the aeration head (43) and gradually bend to be parallel to the central axis of the aeration head (43), and finally pass through the top surface of the aeration head (43).

4. The aeration device for wastewater treatment according to claim 1, characterized in that, The diameter of the inlet end of the aeration hole (6) is not less than the diameter of the outlet end.

5. The aeration device for wastewater treatment according to claim 1, characterized in that, Multiple elastic structures (44) are connected between the bottom surface of the baffle (42) and the bottom plate of the gas collection chamber (41), and the multiple elastic structures (44) are evenly distributed in the gas collection chamber (41).

6. The aeration device for wastewater treatment according to claim 5, characterized in that, The elastic structure (44) includes a limiting sleeve (441), a limiting rod (442) is slidably inserted into the limiting sleeve (441), a spring (443) is connected to the bottom end of the limiting rod (442), and the other end of the spring (443) is connected to the bottom surface of the limiting sleeve (441).

7. The aeration device for wastewater treatment according to claim 1, characterized in that, At least one set of mutually symmetrical limiting blocks (45) are fixedly connected to the side of the baffle (42), and the side wall of the gas collection chamber (41) is provided with limiting grooves (46) for the limiting blocks (45) to move.

8. The aeration device for wastewater treatment according to claim 1, characterized in that, The connector (5) includes a first connecting section (51) and a second connecting section (52). The first connecting section (51) is detachably connected to the second connecting section (52). The other end of the first connecting section (51) is fixedly connected to the bottom surface of the gas collection chamber (41), and the other end of the second connecting section (52) is fixedly connected to the bottom plate of the sewage treatment tank.

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