What are the manifestations and solutions of mechanical seal failures in Dalian chemical pumps?

As an indispensable equipment in chemical production, the performance and reliability of Dalian chemical pumps directly affect the safety and efficiency of production. By rational selection, correct use, and regular maintenance, the long-term stable operation of chemical pumps can be ensured, providing strong support for the development of the chemical industry. With the continuous advancement of technology, the design and manufacturing of chemical pumps are also constantly innovating. In the future, more efficient, energy-saving, and environmentally friendly chemical pump products will emerge, bringing more convenience and benefits to the chemical industry.

The installation position of the pump should be convenient for operation, maintenance, and overhaul. At the same time, the suction height and discharge height of the pump should be considered to avoid a decrease in suction performance or insufficient discharge pressure due to improper installation position. For some pumps that transport high-temperature media, insulation and heat dissipation measures also need to be considered.

What are the manifestations and solutions of mechanical seal failures in Dalian chemical pumps?

leak

Fault manifestation: There is obvious medium leakage at the mechanical seal, which may be a slight drip or a large amount of jet leakage.

Possible reasons

Sealing surface wear: Particle impurities in the medium, frequent starting and stopping, or prolonged operation can all cause sealing surface wear.

Aging of seals: Long term exposure to chemical corrosion and high temperatures can cause seals to lose their elasticity and sealing performance.

Improper installation: The sealing surface is not aligned correctly during installation, the sealing components are not installed properly or damaged.

Pump shaft vibration: Bearing damage, pump shaft bending, and other conditions can cause excessive vibration of the pump shaft, resulting in the sealing surface not being able to fit tightly.

solution

Repair or replace the sealing surface: If the wear is light, the sealing surface can be ground and repaired; If the wear is severe, the sealing ring needs to be replaced.

Replace seals: Replace aging or damaged seals in a timely manner, and choose sealing materials that are suitable for the characteristics and working conditions of the medium.

Reinstall: Strictly follow the installation instructions to ensure that the sealing surface is flat, clean, and the sealing components are installed correctly.

Troubleshooting and resolving pump shaft vibration issues: Check bearings, pump shafts, and other components, repair or replace damaged parts, and ensure the concentricity and perpendicularity of the pump shaft.

fever

Fault manifestation: The temperature at the mechanical seal has significantly increased, which may be accompanied by smoke, odor, and other phenomena.

Possible reasons

Insufficient lubrication: Insufficient or dry lubricating fluid in the sealing chamber causes friction and heat generation on the sealing surface.

Excessive pressure on the sealing surface: Excessive compression of the spring or high medium pressure increases the frictional force between the sealing surfaces, generating excessive heat.

Poor cooling: Cooling system malfunction, such as insufficient coolant flow, blocked cooling pipes, etc., which cannot timely remove the heat generated by the seal.

solution

Supplement lubricant: Check the lubrication condition of the sealing chamber and replenish or replace the lubricant in a timely manner.

Adjust the specific pressure of the sealing surface: Adjust the compression amount of the spring appropriately, or select the sealing structure reasonably according to the medium pressure to reduce the specific pressure of the sealing surface.

Check and repair the cooling system: clean the cooling pipes to ensure smooth flow of coolant; Check the cooling water pump and other equipment to ensure their normal operation.

abnormal sound

Fault manifestation: The mechanical seal emits abnormal sounds during operation, such as friction sounds, impact sounds, etc.

Possible reasons

Sealing surface damage: Cracks, scratches, or uneven wear on the sealing surface can cause abnormal noise during operation.

Loose seal: The seal is not securely installed and may become loose or displaced during operation, causing noise when colliding with other components.

Impurities in the medium: Particle impurities in the medium enter between the sealing surfaces, causing friction and abnormal noise.

solution

Replace sealing surface: If the sealing surface is severely damaged, the sealing ring should be replaced in a timely manner.

Tighten the seal: Check the installation of the seal to ensure its firmness and reliability, and reinstall it if necessary.

Filter medium: Install a filter at the inlet of the pump to remove particulate impurities from the medium and prevent them from entering the sealing surface.

Chemical pump is an important equipment widely used in the chemical industry, mainly used to transport various chemical media such as acids, bases, salt solutions, organic solvents, corrosive liquids, as well as special fluids such as high temperature, high pressure, and high viscosity. The design and manufacturing of chemical pumps need to fully consider the chemical properties, physical characteristics, and working environment requirements of the medium to ensure their safe, reliable, and efficient operation.

By utilizing advanced sensors and automation control technology, remote monitoring, fault diagnosis, and automatic protection functions of chemical pumps can be achieved. Intelligent chemical pumps can monitor operating parameters in real-time, automatically adjust operating status, improve system reliability and efficiency, and reduce manual maintenance costs.