Reasons for impurities in the packing gland of a high-flow, high-head multistage pump

Category: Water pump knowledge

2025-06-12

High-flow, high-head multistage pumps are widely used in water conservancy, power generation, and chemical industries. Impurities appearing between the packing is a common problem during their operation. Understanding the causes and taking effective measures are crucial for ensuring safe pump operation and extending its service life.

I. Cause Analysis

1. Impurities in the medium: The transported medium itself contains impurities such as sand and dust. These impurities enter the pump along with the medium and accumulate at the packing.

2. Seal failure: Poor sealing performance of the pump allows external impurities or gases to enter the pump, contaminating the packing.

3. Packing aging: Long-term use leads to aging and wear of the packing, producing impurities or debris.

4. Improper installation: Failure to clean thoroughly or improper selection of packing during installation can create hidden dangers for pump operation.

II. Impact Analysis

The presence of these impurities can seriously affect pump operation. First, it accelerates packing wear, shortening its service life; second, it can cause unstable pump flow, affecting the normal operation of the production line; finally, it can also cause pump failure, leading to downtime and maintenance, resulting in economic losses.

III. Solutions

1. Filter the medium: Install a filter device before the medium enters the pump to remove impurities.

2. Check the seal: Regularly check and maintain the pump's sealing performance to ensure that external impurities cannot enter.

3. Replace the packing: Regularly inspect and replace the packing to avoid problems caused by packing aging.

4. Standardized installation: Strictly follow operating procedures during installation to ensure the cleanliness of all components and select appropriate packing.

5. Maintenance: Develop a pump maintenance plan for regular cleaning and inspection to ensure the pump is in good operating condition.

IV. Preventive Measures

In addition to the above solutions, preventive measures should also be strengthened. For example, strengthening medium quality management, optimizing the operating environment, and improving the skills and awareness of operators to reduce the possibility of impurity generation from the source.

Summary: Impurities appearing between the packing of high-flow, high-head multistage pumps is a complex problem that requires analysis and solutions from multiple perspectives. By strengthening medium management, checking sealing performance, replacing packing, standardizing installation, and developing a maintenance plan, the presence of impurities can be effectively reduced, ensuring safe pump operation.

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