The measures to prevent leakage during the operation of the sewage mixer can be started from many aspects, the following are some key measures:

First, ensure the quality of equipment design and manufacturing

1. Reasonable design of mechanical seal structure:

- The verticality of the seal end face and the center line of the shaft should be considered in the design to ensure that the seal end face is tightly fitted.

- Select the appropriate load factor to avoid cracks, deformation, damage and other phenomena on the end face of the seal.

2. Use quality materials:

- Use corrosion-resistant and wear-resistant materials to make sealing parts, such as dynamic rings, static rings, etc.

3. Strict manufacturing process:

- During the manufacturing process, ensure the machining accuracy and assembly quality of each component to avoid assembly deviation.

Second, correct installation and debugging

1. Comply with installation requirements:

- Ensure that the shaft in the installation of mechanical seal flexure, oscillation, axial momentum, etc. meet the standard.

- The end of the shaft (bushing) for mounting the dynamic ring seal and the end of the static ring seal and the end of the seal gland (or housing) shall be chamfered and polished.

2. Adjust the installation height:

- Avoid too tight or too loose installation, adjust the installation height, so that the spring to maintain the appropriate preload force.

- After installation, pull the spring with a screwdriver, check its reset, and ensure that there is a 2-4mm travel distance.

3. Pay attention to the coordination of sealing parts:

- Ensure that the components associated with the seal fit well and are of reliable quality.

Third, strengthen operation management and maintenance

1. Regular inspection and maintenance:

- Regularly check the operation of the mechanical seal, including the wear of the seal end face, the preload force of the spring, etc.

- Timely replacement of severely worn parts, such as sealing rings, springs, etc.

2. Avoid vibration sources:

- Eliminate vibration sources of auxiliary equipment such as pumps, motors, bases, and field pipelines to ensure smooth operation of the submersible mixer.

3. Optimize water quality:

- Improve water quality, reduce suspended particles and impurities in water, and reduce wear on mechanical seals.

Fourth, adopt auxiliary measures

1. Add auxiliary flushing system:

- Where conditions permit, design an auxiliary flushing system to flush the seal cavity and reduce wear on the seal end face.

- The flushing pressure should be higher than the sealing chamber pressure to ensure the flushing effect.

2. Set the oil spill protector:

- Set oil leakage protector in the lubricating oil chamber, when the seal ring is damaged, timely alarm and take measures to prevent oil leakage and burn the motor.

Fifth, comply with operating procedures and safety regulations

1. Comply with the operating procedures:

- Start, run and stop the equipment in strict accordance with the operating procedures.

2. Set warning signs:

- Place eye-catching warning signs on the site of rotating impellers and automatic starting equipment to remind operators to pay attention to safety.

3. Prevent the risk of electric shock:

- Ensure that the cable is not sucked into the impeller, and the cable head must be on the liquid surface to prevent water from seeping through the cable into the wiring box or the motor.

To sum up, the prevention of leakage in the operation of the sewage mixer needs to start from many aspects such as equipment design and manufacturing, installation and commissioning, operation management and maintenance, the use of auxiliary measures and compliance with operating procedures and safety regulations. Through the implementation of these measures, the risk of leakage can be effectively reduced to ensure the normal operation of the equipment and the effect of sewage treatment.