Double-acting electric aeration pump for sewage treatment

Abstract

The application discloses a double-acting electric aeration pump for sewage treatment, which comprises a motor shell frame and a linear motor installed on the motor shell frame. Motor shafts extending outward from both ends of the linear motor are fixedly connected with vibrating diaphragms. The vibrating diaphragm fixedly connected to the shaft end of the motor shaft and the corresponding air chamber seat constitute an air chamber. An air inlet valve and a gas supply valve are arranged on the air chamber seat. The air inlet valve is connected to an air inlet cavity, and the gas supply valve is connected to a gas supply cavity. The gas supply cavity is connected to a pressure stabilizing cavity through a corresponding gas supply pipe. The pressure stabilizing cavity is connected with an air outlet pipe. The double-acting electric aeration pump for sewage treatment has the advantages of compact structure, high pumping efficiency, low energy consumption and low noise, and is particularly suitable for an aeration pump for biological aeration treatment of sewage.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an air supply pump for aeration in a biological wastewater treatment system. Background Technology

[0002] Biological wastewater treatment utilizes the metabolic activity of microorganisms in wastewater to decompose biodegradable organic matter, offering advantages such as high treatment capacity and good effluent quality. Among these methods, activated sludge aerobic biological treatment utilizes aerobic microorganisms in activated sludge to degrade organic matter. However, aerobic microorganisms require the presence of oxygen to function effectively; aeration ensures sufficient contact between air and wastewater, allowing oxygen to dissolve fully into the water and enhancing the vitality of the aerobic microorganisms.

[0003] In biological wastewater treatment, the aeration pump is the core of the entire aeration system. It increases the oxygen content in the wastewater by aerating it, thereby promoting the degradation of organic matter by aerobic microorganisms and removing oxidizable precipitates. Simultaneously, aeration allows for sufficient contact between water and air to exchange gaseous substances and remove volatile harmful substances from the water. Currently, most aeration pumps used in biological wastewater treatment systems are centrifugal impeller fans and vane pumps. Centrifugal impeller fans use a high-speed rotating impeller to accelerate gas, then decelerate and change its direction to create pressurized airflow. The air supply from a centrifugal fan is greatly affected by the inlet air temperature and density, resulting in relatively low and unstable blowing efficiency. Furthermore, wear of high-speed rotating components further reduces efficiency and generates frictional noise. Vane pumps also have high-speed moving transmission components, making them prone to malfunctions. In actual operation, they can also encounter water or oil, causing blockages and compromising the air supply. Both vane air pumps and centrifugal impeller fans suffer from large size, low operating efficiency, high noise levels, complex drive structures, susceptibility to mechanical failures, and difficulty in achieving continuous and efficient air supply over long periods. Therefore, they are not well-suited for wastewater treatment aeration systems. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a double-acting electric aeration pump for sewage treatment that is compact in structure, has high pumping efficiency, low energy consumption and low noise.

[0005] To solve the above-mentioned technical problems, the present invention provides a double-acting electric aeration pump for wastewater treatment, comprising a motor housing and a linear motor mounted on the motor housing. A vibrating diaphragm is fixedly connected to each of the motor shafts extending outwards from both ends of the linear motor. The vibrating diaphragm fixedly connected to the end of the motor shaft and a corresponding air chamber seat constitute an air chamber. An inlet valve and a supply valve are provided on the air chamber seat. The inlet valve leads to the inlet chamber, and the supply valve leads to the supply chamber. The supply chamber leads to a pressure-stabilizing air chamber through a corresponding supply pipe, and the pressure-stabilizing air chamber is connected to an outlet pipe. The center of the vibrating diaphragm is fixedly connected to the motor shaft, and the periphery of the vibrating diaphragm is fixedly pressed against the diaphragm seat by the corresponding air chamber seat, which is fixedly mounted on the motor housing.

[0006] In the above technical solution, due to the adoption of a reciprocating diaphragm structure, the air drawn into the intake chamber can be delivered to the air supply chamber without leakage, resulting in high pumping efficiency, low pumping resistance, and smooth gas flow. Furthermore, since the reciprocating diaphragm is directly driven by a linear motor, the complex transmission mechanism of the air pump is completely eliminated, leading to high driving efficiency, low energy consumption, and a more compact overall structure. This efficient pumping mode is more suitable for aeration pumps in wastewater treatment systems. The use of a diaphragm structure and direct drive effectively stabilizes the pumping volume and enables continuous, efficient, long-term operation. Moreover, with a diaphragm and air supply chamber at both ends of the linear motor, the reciprocating linear motor consistently drives the diaphragm to pump air during each stroke, resulting in high working efficiency and low energy consumption. The air supply chamber is connected to the pressure-stabilizing air chamber via an air supply pipe, providing the advantage of stable pumping pressure and flow rate.

[0007] In a preferred embodiment of the present invention, the motor housing is mounted on the motor base plate via a motor shock absorber, and a pressure-stabilizing air chamber seat is fixedly connected below the motor base plate, with the pressure-stabilizing air chamber disposed on the pressure-stabilizing air chamber seat. This structure has good shock absorption and stability effects.

[0008] In a preferred embodiment of the present invention, the vibrating diaphragm is fixedly mounted on the motor shaft by a diaphragm locking seat and a locking cover. This design is structurally sound and provides high pumping efficiency.

[0009] In a further embodiment of the present invention, the linear motor is mounted on a motor housing via a motor mounting bracket. The motor base plate is fixedly mounted to the inlet of the pressure-stabilizing chamber of the pressure-stabilizing chamber seat via a connecting sealing plate. An air pump housing covers the linear motor, and this air pump housing is fixedly connected to the connecting sealing plate. The structure is compact, facilitating installation and maintenance. Attached Figure Description

[0010] The double-acting electric aeration pump for wastewater treatment of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is a schematic diagram of the pump body structure of a specific embodiment of the double-acting electric aeration pump for wastewater treatment of the present invention;

[0012] Figure 2 yes Figure 1 A schematic diagram of the product structure of the embodiment shown.

[0013] In the diagram, 1—motor housing, 2—diaphragm seat, 3—vibrating diaphragm, 4—air chamber, 5—inlet valve, 6—inlet cavity, 7—air chamber cover, 8—air supply cavity, 9—air supply valve, 10—air chamber seat, 11—diaphragm locking cover, 12—diaphragm locking seat, 13—motor shaft, 14—linear motor, 15—motor mounting bracket, 16—motor shock absorber, 17—air pump housing, 18—outlet pipe, 19—pressure stabilizing air chamber, 20—pressure stabilizing air chamber seat, 21—connecting sealing plate, 22—motor base plate, 23—air supply pipe. Detailed Implementation

[0014] like Figure 1 As shown, a linear motor 14 is mounted inside a horizontally placed cylindrical motor housing 1 via a motor mounting bracket 15. The linear motor 14 has motor shafts 13 extending outwards at both ends. Under the control of a motor controller, the linear motor 14 causes its outwardly extending motor shafts 13 to reciprocate linearly along the motor axis. A diaphragm 3 and an air chamber 4 are provided at both ends of the linear motor 14. The diaphragm 3 is a circular sheet structure made of nitrile rubber, but can also be made of neoprene rubber, fluororubber, or polytetrafluoroethylene (PTFE). The diaphragm 3 at each end of the motor shaft 13 and the corresponding air chamber seat 10 form a closed air chamber 4. The motor shaft 13 passes through the center of the corresponding diaphragm 3 and is clamped and fixed to the motor shaft 13 by a diaphragm locking seat 12 and a diaphragm locking cover 11. The periphery of the diaphragm 3 is fixedly pressed against the diaphragm seat 2 by the corresponding air chamber seat 10. The diaphragm seat 2 is fixedly mounted at both ends of the motor housing 1. An inlet valve 5 and an outlet valve 9 are provided on the end wall of the air chamber seat 10. Both inlet valve 5 and outlet valve 9 are made of rubber. Several vent holes are provided on the end wall of the air chamber seat 10 corresponding to the flexible rubber valve plates. During the reciprocating air intake and supply process of the vibrating diaphragm 3, the flexible valve plates of the inlet valve 5 and outlet valve 9 alternately approach or move away from the vent holes on the end wall of the air chamber seat 10 to allow air intake or supply. An air chamber cover 7 is fixedly installed at the outer end of the air chamber seat 10. The air chamber cover 7, fixedly installed on the air chamber seat 10, is provided with an inlet chamber 6 and an outlet chamber 8 that are separated from each other and do not communicate. The inlet valve 5 corresponds to the inlet chamber 6 and is interconnected, and the outlet valve 9 corresponds to the outlet chamber 8 and is interconnected. The inlet chamber 6 is open to the outside atmosphere. Figure 2 As shown, the air supply chamber 8 is connected to the pressure stabilizing air chamber 19 through the air supply pipe 23 made of nitrile rubber. The vibrating diaphragm 3 and the air chamber 4 located at both ends of the linear motor 14 have a symmetrical structure.

[0015] like Figure 2 As shown, a motor shock absorber 16 is fixedly installed on the lower side of the motor housing 1. The motor shock absorber 16 is an elastic block made of nitrile rubber. The motor housing 1 is fixedly installed on the motor base plate 22 through the motor shock absorber 16. The motor base plate 22 is then fixedly installed on the pressure stabilizing air chamber 19 of the pressure stabilizing air chamber seat 20 through the connecting sealing plate 21. The air chambers 4 located at both ends of the linear motor 14 are respectively connected to the pressure stabilizing air chamber 19 on the pressure stabilizing air chamber seat 20 through the corresponding air supply pipes 23. An air outlet pipe 18 is connected to the pressure stabilizing air chamber 19, so that the compressed air in the air chamber 4 can be transported to the outside through the air supply valve 9, the air supply pipe 23, the pressure stabilizing air chamber 19 and the air outlet pipe 18. An air pump housing 17 is covered on the linear motor 14, and the lower end of the air pump housing 17 is fixedly connected to the connecting sealing plate 21.

Claims

1. A double-acting electric aeration pump for wastewater treatment, comprising a motor housing (1) and a linear motor (4) mounted on the motor housing (1), characterized in that: Vibrating diaphragms (3) are fixedly connected to the motor shafts (13) extending outward from both ends of the linear motor (4). The vibrating diaphragms (3) fixedly connected to the ends of the motor shafts (13) and the corresponding air chamber seats (10) form an air chamber (4). An air inlet valve (5) and an air supply valve (9) are provided on the air chamber seats (10). The air inlet valve (5) leads to the air inlet chamber (6), and the air supply valve (9) leads to the air supply chamber (8). The air supply chamber (8) leads to the pressure stabilizing air chamber (19) through the corresponding air supply pipe (23). The pressure stabilizing air chamber (19) is connected to the air outlet pipe (18). The center of the vibrating diaphragm (3) is fixedly connected to the motor shaft (13), and the periphery of the vibrating diaphragm (3) is fixedly pressed onto the diaphragm seat (2) by the corresponding air chamber seat (10). The diaphragm seat (2) is fixedly installed on the motor housing (1).

2. The double-acting electric aeration pump for wastewater treatment according to claim 1, characterized in that: The motor housing (1) is mounted on the motor base plate (22) via a motor shock absorber (16). A pressure stabilizing air chamber seat (20) is fixedly connected below the motor base plate (22), and the pressure stabilizing air chamber (19) is disposed on the pressure stabilizing air chamber seat (20).

3. The double-acting electric aeration pump for wastewater treatment according to claim 1 or 4, characterized in that: The vibrating diaphragm (3) is fixedly installed on the motor shaft (13) by the diaphragm locking seat (12) and the vibration locking cover (11).

4. The double-acting electric aeration pump for wastewater treatment according to claim 1, characterized in that: The linear motor (14) is mounted on the motor housing (1) via a motor mounting bracket (15).

5. The double-acting electric aeration pump for wastewater treatment according to claim 1, characterized in that: The motor base plate (22) is fixedly installed at the opening of the pressure stabilizing air chamber (19) of the pressure stabilizing air chamber seat (20) via a connecting sealing plate (21).

6. The double-acting electric aeration pump for wastewater treatment according to claim 1, characterized in that: The linear motor (14) is covered with an air pump housing (17), which is fixedly connected to the connecting sealing plate (21).

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