A biological tank aeration blower

Abstract

This utility model discloses an aeration blower for a biological treatment tank, comprising: a blower main frame, which is located at the upper end of the biological treatment tank for wastewater treatment; a blower body is located inside the blower main frame; and a variable frequency speed-regulating blower for speed adjustment is located on one side of the blower body. A secondary air duct is connected in parallel to the main air duct via an electric pressure relief valve. The cleaning sleeve design of this utility model is driven to rotate by the airflow generated by the aeration head. The airflow swirl vanes and nylon brushes automatically clean the surface dirt of the aeration head, while auxiliary ball bearings reduce frictional resistance, ensuring smooth rotation of the cleaning sleeve and effectively preventing aeration head blockage. A multi-parameter sensor module can predict blower failures in advance by long-term monitoring of data such as pressure, flow rate, temperature, and humidity, enabling preventative maintenance, reducing maintenance workload and time costs, ensuring stable operation of the blower and aeration system, and continuously maintaining good aeration effects.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment, specifically relating to an aeration blower for a biological treatment tank. Background Technology

[0002] In the critical biological treatment stage of wastewater treatment, the aeration effect plays a decisive role in the survival of microorganisms and the efficiency of wastewater purification. Traditional aeration blowers for biological treatment tanks have revealed many drawbacks in practical applications. Firstly, the blower speed is difficult to precisely adjust according to different operating conditions in the biological treatment tank, leading to uneven aeration and affecting wastewater treatment quality. For example, when wastewater concentration changes, the aeration intensity cannot be adjusted in time, preventing microorganisms from being in their optimal living environment, thus reducing their ability to decompose pollutants. Consequently, the aeration heads are easily clogged by impurities and microorganisms in the wastewater, affecting the aeration effect and making cleaning and maintenance cumbersome. In existing technologies, after prolonged use, a large amount of dirt accumulates on the surface of the aeration heads, obstructing gas output, reducing aeration efficiency, and increasing energy consumption. Utility Model Content

[0003] The purpose of this invention is to provide an aeration blower for a biological treatment tank to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an aeration blower for a biological treatment tank, comprising:

[0005] The main frame of the blower is located at the upper end of the sewage treatment biochemical tank, and the blower body is located inside the main frame. A variable frequency speed-regulating blower for variable frequency speed regulation is located on one side of the blower body. A secondary air duct is connected in parallel to the main air duct via an electric pressure relief valve.

[0006] One end of the main air duct extends to the bottom of the main frame of the blower and is connected to an aeration plate whose depth is adjusted according to the depth of the biological tank via a pneumatic hose. The bottom of the aeration plate is evenly provided with aeration heads that aerate the biological tank in a swirling manner. The aeration heads are all driven to rotate by the airflow generated by the aeration heads and have cleaning sleeves that clean the surface of the aeration heads in real time.

[0007] Preferably, the variable frequency speed control fan is connected to an external PLC controller for speed regulation, and a pre-filter is provided on the air inlet port of the variable frequency speed control fan. The pre-filter is located on the outer side of the fan main frame. The variable frequency speed control fan can accurately adjust the speed according to the actual working conditions such as the sewage concentration and microbial activity in the biological tank, thereby flexibly controlling the aeration intensity.

[0008] Preferably, the cleaning sleeve is movably fitted onto the air pipe between the aeration head and the aeration plate, and an auxiliary ball bearing is movably embedded on the side of the cleaning sleeve that contacts the aeration head. The aeration head rotates using the airflow generated therein, providing real-time cleaning of its surface. This movable fitting onto the air pipe allows for flexible rotation without interfering with the normal operation of the aeration head. The embedded auxiliary ball bearing significantly reduces the frictional resistance between the cleaning sleeve and the aeration head.

[0009] Preferably, the lower end face of the cleaning sleeve is uniformly provided with a fixed strip plate of arc structure, and the inner side of each fixed strip plate is provided with airflow vanes that drive the cleaning sleeve to rotate. The airflow impacts the airflow vanes on the inner side of the fixed strip plate, thereby driving the cleaning sleeve to rotate. This design cleverly utilizes the airflow energy generated during aeration, achieving automatic rotation of the cleaning sleeve without additional power.

[0010] Preferably, the surface of the airflow swirl blade is uniformly provided with nylon brushes that cover the surface of the aeration head for automatic cleaning. The nylon brushes can closely adhere to the surface of the aeration head and effectively remove impurities, microorganisms and other dirt from the surface of the aeration head.

[0011] Preferably, cylinder components are provided at the end of the main frame of the blower and on both sides of the blower body, and one end of the cylinder component extends through to the lower end of the main frame of the blower and is fixedly connected to both sides of the upper surface of the aeration plate. The cylinder component can precisely adjust the depth of the aeration plate according to the aeration requirements of different areas in the biochemical tank.

[0012] Preferably, the aeration head is equipped with a 45° inclined spiral guide plate inside, and the surface is covered with a rubber microporous membrane with a pore size of 0.1-0.3mm. The 45° inclined spiral guide plate can guide the airflow to form a vortex, so that when the gas is sprayed from the aeration head, it diffuses into the biological tank in a spiral shape, increasing the contact area and contact time between the gas and the sewage.

[0013] Preferably, the end of the secondary air duct is connected to an external ozone generator via a flange, and the main air duct is connected to the secondary air duct via a three-way valve with the interface connected to an electric pressure relief valve, which can effectively kill harmful microorganisms in sewage, decompose recalcitrant organic pollutants, and improve sewage treatment efficiency.

[0014] Preferably, the blower body contains a multi-parameter sensor module, which integrates four types of sensors: pressure, flow rate, temperature, and humidity. In terms of solving the problem of uneven aeration, the pressure sensor can monitor the pressure inside the blower and the air duct in real time. Together with the intelligent control system and the flow regulating valve, it can accurately regulate the gas pressure of each aeration branch pipe, ensuring that the aeration volume in each area is stable and uniform, and avoiding insufficient or excessive aeration in some areas due to pressure fluctuations.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are: the aeration blower for the biochemical tank,

[0016] This invention features a cleaning sleeve design that is driven to rotate by the airflow generated by the aeration head. The airflow swirl vanes and nylon brushes automatically clean the surface of the aeration head, while auxiliary ball bearings reduce frictional resistance, ensuring smooth rotation of the cleaning sleeve and effectively preventing aeration head clogging. A multi-parameter sensor module can monitor data such as pressure, flow rate, temperature, and humidity over a long period, predicting fan failures in advance, enabling preventative maintenance, reducing maintenance workload and time costs, ensuring stable operation of the fan and aeration system, and maintaining consistently good aeration performance.

[0017] This invention utilizes a pressure sensor within a multi-parameter sensor module to monitor the pressure inside the blower and in the air duct in real time. Combined with an intelligent control system and flow regulating valve, it precisely controls the gas pressure in each aeration branch pipe. Simultaneously, the flow sensor provides comprehensive information to the intelligent system, enabling it to dynamically adjust the blower speed and branch pipe flow rate according to the needs of different areas of the biological treatment tank. This, along with the 45° inclined spiral guide vanes inside the aeration head guiding the airflow to form a swirling flow, significantly improves aeration uniformity, optimizes the microbial living environment, and enhances wastewater treatment efficiency. Furthermore, the variable frequency speed-regulating blower, connected to an external PLC controller, can precisely adjust its speed based on actual operating conditions such as wastewater concentration and microbial activity, flexibly controlling the aeration intensity and further ensuring the accuracy of aeration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front view of the aeration head and cleaning sleeve of this utility model;

[0020] Figure 3 This is a front internal view of the aeration head of this utility model;

[0021] Figure 4 This is a top view of the inner side of the cleaning sleeve of this utility model;

[0022] Figure 5 This is a bottom view of the aeration plate of this utility model.

[0023] In the diagram: 1. Main frame of the blower; 2. Main body of the blower; 3. Variable frequency speed control blower; 4. Main air duct; 5. Secondary air duct; 6. Aeration plate; 7. Aeration head; 8. Cleaning sleeve; 9. Pre-filter; 10. Auxiliary ball bearings; 11. Fixing strip; 12. Airflow swirl vane; 13. Nylon brush; 14. Cylinder components; 15. Spiral guide vane; 16. Rubber microporous membrane. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution: an aeration blower for a biological treatment tank, comprising:

[0026] The main frame 1 of the blower serves as the support and mounting framework for the entire aeration blower. Constructed of high-strength steel, it boasts excellent structural stability, capable of withstanding vibrations generated during operation and impacts from the external environment. Mounted atop the wastewater treatment biological tank, it provides a stable foundation for the blower body 2 and other auxiliary components. Its internal space layout is rationally planned for easy connection and maintenance of all parts. The main frame 1 houses the blower body 2, the core power source of the entire system. Its internal structure is intricate, containing key components such as the motor and transmission device. The motor, as the driving component, efficiently converts electrical energy into mechanical energy, which drives the impeller to rotate at high speed through the transmission device, thereby generating a powerful airflow. The outer shell of the blower body 2 is made of sound-insulating and heat-insulating materials, effectively reducing noise interference from the blower during operation and minimizing internal heat loss, maintaining a suitable temperature environment for stable blower operation.

[0027] A variable frequency speed-regulating fan 3 is installed on one side of the main fan body 2. The working principle of the variable frequency speed-regulating fan 3 is based on variable frequency technology. It adjusts the motor speed by changing the power supply frequency input to the motor. Specifically, the external PLC controller, based on comprehensive data from multi-parameter sensor modules (such as wastewater concentration in the biological treatment tank, microbial activity, and internal pressure, flow rate, temperature, and humidity of the fan), performs complex calculations and analysis, and then sends instructions to the inverter of the variable frequency speed-regulating fan 3. Upon receiving the instructions, the inverter quickly adjusts the frequency of the output power supply, causing the motor speed to change accordingly. For example, when the wastewater concentration in the biological treatment tank increases and the microorganisms' oxygen demand increases, the PLC controller controls the inverter to increase the power supply frequency, accelerating the motor speed and thus increasing the airflow and pressure entering the main air duct 4 to meet aeration requirements. Conversely, when the wastewater concentration decreases and the demand decreases, the power supply frequency is reduced, decreasing the fan speed to avoid over-aeration and achieve energy-saving operation. Meanwhile, the variable frequency speed control fan 3 is equipped with a pre-filter 9 at the air inlet port. It adopts a multi-layer filter structure, which can effectively filter dust, particles and other impurities in the air, prevent these pollutants from entering the fan, reduce wear on key components such as the fan impeller, extend the service life of the fan, and ensure stable and efficient operation of the fan. The main body of the fan 2 is connected to a secondary air duct 5 in parallel through the main air duct 4 using an electric pressure relief valve.

[0028] The main air duct 4 is made of corrosion-resistant, high-strength pipe material with a smooth interior, effectively reducing air resistance during flow and ensuring stable and efficient airflow. One end of the main air duct 4 connects to the blower body 2, and the other end extends to the bottom of the blower main frame 1, connecting to the aeration plate 6 via a pressure hose. An electric pressure relief valve is installed on the main air duct 4, which monitors the air pressure in the duct in real time. When the air pressure exceeds a set safety value, the electric pressure relief valve automatically opens to discharge excess gas, ensuring stable air pressure within the main air duct 4 and preventing damage to the equipment due to excessive pressure. This ensures the safe and reliable operation of the entire aeration system. The secondary air duct 5 is also made of corrosion-resistant material and is connected in parallel to the main air duct 4 via a three-way valve, with the interface located on the electric pressure relief valve. The end of the secondary air duct 5 is connected to an external ozone generator via a flange. When the wastewater quality in the biological treatment tank is poor and conventional aeration cannot meet the treatment requirements, the auxiliary air duct 5 can be opened through the three-way valve to introduce ozone generated by the ozone generator into the main air duct 4. The ozone will then mix with the air and enter the biological treatment tank. Ozone has strong oxidizing properties, effectively killing harmful microorganisms in wastewater, decomposing recalcitrant organic pollutants, significantly improving wastewater treatment efficiency, and enabling the equipment to adapt to complex and changing wastewater conditions.

[0029] One end of the main air duct 4 extends to the bottom of the blower main frame 1 and is connected via a pressure hose to an aeration plate 6 whose depth is adjustable according to the depth of the biological treatment tank. The aeration plate 6 is flat and made of corrosion-resistant, high-strength engineering plastics or metal alloys. Its design aims to evenly distribute the gas delivered from the main air duct 4 to each aeration head 7. The aeration plate 6 has a complex airflow distribution channel inside, which ensures that the gas is evenly distributed before entering each aeration head 7, avoiding situations where the local air volume is too large or too small.

[0030] The bottom of the aeration plate 6 is uniformly provided with aeration heads 7 for swirling aeration of the biological tank. Inside each aeration head 7 is a 45° inclined spiral guide vane 15. When gas enters the aeration head 7, the airflow forms a swirling flow under the guidance of the inclined spiral guide vane 15. The aeration head 7 is also driven to rotate by the airflow generated by the aeration head 7 and cleans the surface of the aeration head 7 in real time. The cleaning sleeve 8 is made of lightweight and wear-resistant plastic material and is movably sleeved on the air pipe between the aeration head 7 and the aeration plate 6. The side of the sleeve that contacts the aeration head 7 is movably embedded with auxiliary balls 10 to assist rotation and prevent jamming.

[0031] The variable frequency speed control fan 5 is connected to an external PLC controller for speed regulation. A pre-filter 9 is installed at the air inlet of the variable frequency speed control fan 5, and the pre-filter 9 is located on the outer side of the fan main frame 1. A cleaning sleeve 8 is movably fitted onto the air pipe between the aeration head 7 and the aeration plate 6. An auxiliary ball bearing 10 is movably embedded on the side of the cleaning sleeve 8 that contacts the aeration head 7. The auxiliary ball bearing 10 is made of a high-strength, low-friction material, which greatly reduces the rotational friction resistance between the cleaning sleeve 8 and the aeration head 7, allowing the cleaning sleeve 8 to rotate more smoothly around the air pipe.

[0032] The lower end face of the cleaning sleeve 8 is uniformly provided with a fixed strip 11 of arc structure. The fixed strip 11 not only serves as a structural support, but its arc structure can also effectively guide the airflow generated by the aeration head 7. In addition, the inner side of the fixed strip 11 is provided with airflow vanes 12 that are driven by airflow to rotate the cleaning sleeve 8. When the aeration head 7 sprays airflow, the airflow impacts the airflow vanes 12, thereby driving the cleaning sleeve 8 to rotate around the air pipe.

[0033] The surface of the airflow swirl blade is uniformly provided with nylon brushes 13 that cover the surface of the aeration head 7 for automatic cleaning. The nylon brushes 13 are soft and tough. During the rotation of the cleaning sleeve 8, they can closely fit the surface of the aeration head 7, effectively remove impurities, microorganisms and other dirt from the surface of the aeration head 7, prevent the aeration head 7 from clogging, maintain its good air permeability, and ensure the stability and continuity of the aeration effect.

[0034] A cylinder 14 is provided at the end of the blower main frame 1 and on both sides of the blower body 2. One end of the cylinder 14 extends through to the lower end of the blower main frame 1 and is fixedly connected to both sides of the upper surface of the aeration plate 6. By precisely controlling its extension and retraction length, the cylinder 14 can flexibly and accurately adjust the depth of the aeration plate 6 according to the aeration needs of different areas of the biological treatment tank. In areas with high sewage concentration and low microbial activity, the aeration plate 6 can be lowered to bring the aeration head 7 closer to the sewage, thereby enhancing the aeration effect. In areas with low sewage concentration and normal microbial activity, the height of the aeration plate 6 can be appropriately increased to avoid over-aeration, thus optimizing the aeration effect of the entire biological treatment tank.

[0035] The aeration head 7 is internally equipped with a 45° inclined spiral guide plate 15, and its surface is covered with a rubber microporous membrane 16 with a pore size of 0.1-0.3 mm. The swirling flow allows the gas to diffuse in a spiral shape into the biological treatment tank when it is ejected from the aeration head 7, greatly increasing the contact area and contact time between the gas and the wastewater. Simultaneously, the rubber microporous membrane 16 covering the surface of the aeration head 7 has good flexibility and anti-clogging properties. When the gas is ejected through the microporous membrane, it is dispersed into tiny bubbles, which diffuse evenly and finely into the biological treatment tank, further improving aeration uniformity, increasing dissolved oxygen efficiency, and providing sufficient oxygen for microorganisms.

[0036] The end of the secondary air duct 5 is connected to an external ozone generator via a flange, and the main air duct 4 is connected to the secondary air duct 5 via a three-way valve, with the interface connected to an electric pressure relief valve.

[0037] The blower body 2 contains a multi-parameter sensor module, integrating four types of sensors: pressure, flow rate, temperature, and humidity. The pressure sensor monitors the pressure inside the blower and the ductwork in real time, providing crucial data support for the operation of the electric pressure relief valve and the intelligent control system's adjustment of the blower speed. This ensures stable and uniform aeration in all areas, preventing insufficient or excessive aeration in some areas due to pressure fluctuations. The flow sensor accurately measures the gas flow rate entering and leaving the blower. Combined with pressure data, this allows the intelligent control system to precisely adjust the blower speed and the flow rate in each branch pipe according to the actual oxygen requirements of different areas of the biological treatment tank, further improving aeration uniformity. The temperature sensor closely monitors the internal temperature of the blower during operation. An abnormally high temperature may indicate excessive motor load or internal friction problems within the blower. The intelligent control system can then promptly adjust the motor speed or issue a maintenance alarm, preventing additional energy consumption and equipment damage due to abnormal operation. The humidity sensor detects the humidity of the incoming air. Humid air may affect the performance of the blower and increase energy consumption. The system can adjust the blower operating parameters according to the humidity data. For example, when the humidity is high, the blower speed can be increased appropriately to ensure normal gas delivery and aeration effect. At the same time, it avoids energy waste caused by excessive humidity, achieves energy-saving operation, ensures stable and efficient operation of the blower, and meets the aeration needs under complex sewage conditions.

[0038] Specifically, during operation, when the aeration blower of the biological treatment tank is working, outside air is first filtered by the pre-filter 9 on the outside of the blower's main frame 1 to remove impurities before entering the variable frequency speed control blower 3. The variable frequency speed control blower 3 is connected to an external PLC controller, which can precisely adjust the speed and regulate the airflow and pressure entering the main air duct 4 based on comprehensive data such as the concentration of sewage in the biological treatment tank, microbial activity, and the internal pressure, flow rate, temperature, and humidity of the blower, fed back by multi-parameter sensor modules.

[0039] Air flows through the main air duct 4, and an electric pressure relief valve ensures stable air pressure. When it is necessary to enhance the sewage treatment effect, the auxiliary air duct 5 can be connected to the main air duct 4 through a three-way valve to introduce ozone generated by the ozone generator and mix it with the air. The air in the main air duct 4 reaches the aeration plate 6 through the air pressure hose, and then enters the biological treatment tank through the evenly distributed aeration heads 7 at the bottom.

[0040] The 45° inclined spiral guide plate 15 inside the aeration head 7 guides the airflow to form a swirling flow. Combined with the rubber microporous membrane 16 with a pore size of 0.1-0.3mm covering the surface, the gas diffuses into the biological tank in a spiral shape, uniformly and delicately, increasing the contact area and time with the sewage and improving the uniformity of aeration.

[0041] During aeration, the airflow generated by the aeration head 7 impacts the airflow vanes 12 on the inner side of the fixing strip 11 at the lower end of the cleaning sleeve 8, driving the cleaning sleeve 8 to rotate around the air tube between the aeration head 7 and the aeration plate 6. The auxiliary ball bearings 10 on the contact side of the cleaning sleeve 8 with the aeration head 7 reduce rotational friction resistance. At the same time, the nylon brushes 13 on the surface of the airflow vanes automatically clean impurities and microbial dirt from the surface of the aeration head 7 during rotation, maintaining good air permeability of the aeration head.

[0042] In addition, the cylinder components 14 on both sides of the end of the blower main frame 1 can precisely adjust the depth of the aeration plate 6 according to the aeration needs of different areas of the biological treatment tank, thereby optimizing the aeration effect. Throughout the process, the multi-parameter sensor module continuously monitors various parameters inside the blower and the air duct, providing a basis for intelligent control, ensuring stable and efficient operation of the blower, and meeting the aeration needs under complex wastewater conditions.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A biochemical tank aeration blower characterized by, include: The main frame of the blower (1) is erected on the upper end of the sewage treatment biochemical tank, and the main frame of the blower (1) is provided with a blower body (2) inside, and a variable frequency speed regulating blower (3) for variable frequency speed regulation is provided on one side of the blower body (2). The blower body (2) is connected to a secondary air duct (5) in parallel through the main air duct (4) using an electric pressure relief valve. One end of the main air duct (4) extends to the bottom of the main frame (1) of the blower and is connected to an aeration plate (6) whose depth is adjusted according to the depth of the biochemical tank via a pressure hose. The bottom of the aeration plate (6) is uniformly provided with aeration heads (7) that aerate the biochemical tank in a swirling manner. The aeration heads (7) are all rotated by the airflow generated by the aeration heads (7) and have cleaning sleeves (8) that clean the surface of the aeration heads (7) in real time.

2. The biochemical pond aeration blower according to claim 1, characterized in that: The variable frequency speed control fan (3) is connected to an external PLC controller for speed adjustment, and a pre-filter (9) is provided on the air inlet port of the variable frequency speed control fan (3), and the pre-filter (9) is located on the outside side of the fan main frame (1).

3. The biochemical pond aeration blower according to claim 1, characterized in that: The cleaning sleeve (8) is movably sleeved on the air pipe between the aeration head (7) and the aeration plate (6), and the side of the cleaning sleeve (8) that contacts the aeration head (7) is movably embedded with auxiliary balls (10).

4. The biochemical pond aeration blower according to claim 1, characterized in that: The cleaning sleeve (8) is uniformly provided with a fixed strip plate (11) of arc structure around the lower end face, and the inner side of the fixed strip plate (11) is provided with an airflow swirl blade (12) that drives the cleaning sleeve (8) to rotate by airflow.

5. The biochemical tank aeration blower according to claim 4, characterized in that: The surface of the airflow swirl blade is uniformly provided with nylon brushes (13) that cover the surface of the aeration head (7) for automatic cleaning of the surface of the aeration head (7).

6. The aeration blower for a biological treatment tank according to claim 1, characterized in that: The fan main frame (1) is provided with cylinder components (14) at the end and on both sides of the fan body (2), and one end of the cylinder component (14) extends through to the lower end of the fan main frame (1) and is fixedly connected to both sides of the upper surface of the aeration plate (6).

7. The aeration blower for a biological treatment tank according to claim 1, characterized in that: The aeration head (7) is equipped with a 45° inclined spiral guide plate (15) inside, and the surface is covered with a rubber microporous membrane (16) with a pore size of 0.1-0.3 mm.

8. The aeration blower for a biological treatment tank according to claim 1, characterized in that: The end of the secondary air duct (5) is connected to an external ozone generator via a flange, and the main air duct (4) is connected to the secondary air duct (5) via a three-way valve and the interface is connected to an electric pressure relief valve.

9. The aeration blower for a biological treatment tank according to claim 1, characterized in that: The main body (2) of the fan contains a multi-parameter sensor module, which integrates four types of sensors: pressure, flow rate, temperature, and humidity.

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