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Nanjing Lanjiang Pump Industry Co., Ltd
The process principle of submersible agitator
Date: 2025-04-07Read: 10
1、 Core structure design
1. Power and transmission system
The submersible motor is used to directly drive the impeller to rotate, and the motor is connected to the impeller through a shaft to achieve efficient conversion of electrical energy into mechanical energy.
The motor has a built-in multi pole winding structure, which has low energy consumption and stable operation, suitable for long-term continuous or intermittent operation.
2. Impeller technology
The impeller is formed by precision casting or stamping, with high precision. The blade is designed as a spiral or guide groove structure, which generates axial thrust and centrifugal force during rotation, forming a gas-solid two-phase flow mixing effect.
The diameter of the hybrid impeller is relatively small (usually 480~980r/min), and it focuses on stirring; The low-speed type focuses on pushing flow and expanding its range of action.
3. Optimization of flow hood
The design of the diffuser and impeller is coordinated to optimize the direction of water flow, reduce energy loss, and enhance the coverage of circulation and tangential flow.
2、 Key process technology
1. Sealing and Protection
The dynamic sealing system adopts dual mechanical seals and lip seals, and the sealing chamber can withstand a pressure of 0.25MPa to prevent liquid from infiltrating the motor.
The oil chamber design reserves space for temperature difference expansion and is equipped with leakage protection devices to ensure reliability in long-term immersion environments.
2. Fluid control
When the impeller rotates at high speed, a negative pressure zone is formed in the guide groove, which sucks in air or liquid medium, mixes with the slurry to form turbulence, and improves the uniformity of stirring.
The shell is designed at a specific angle to generate downward pressure and enhance the suspension effect of sediment at the bottom.
3、 Manufacturing and assembly standards
1. Balance requirement: The impeller and rotor must pass a dynamic balance test (balance accuracy G6.3) to ensure low vibration operation.
2. Materials and Protection: The surface is sprayed with anti-corrosion paint, and the cable adopts waterproof and oil resistant rubber sealing head, with a protection level that meets IP68 standard.
3. Electrical safety: Built in thermal protection switch, grounding wire with yellow/green dual color identification to ensure electrical safety.
4、 Application adaptation features
1. Installation process: Equipped with a hand-operated lifting device and a guide rod system, supporting angle adjustment to adapt to different pool depths and working conditions.
2. Adaptive design: It can handle media such as sewage and mud containing suspended solids, and can withstand rapid restart after long-term shutdown.
Through the above process design, the submersible mixer achieves efficient mixing, low-energy consumption operation, and high reliability, suitable for scenarios such as sewage treatment and chemical reactions.
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