Advantages of Choosing Piston Pumps for Municipal Sewage Treatment:

   In municipal sewage treatment systems, Huaxing piston pumps demonstrate significant advantages in scenarios such as conveying high-concentration sewage and impurity-containing media, thanks to their unique structural principles and performance characteristics. The following is a detailed analysis of the core advantages of choosing piston pumps for municipal sewage from multiple dimensions:

I. High-pressure conveying capacity adapts to municipal sewage working conditions

1. Overcoming long-distance pipeline resistance: Municipal sewage pipe networks often need to transport sewage from collection points to treatment plants, with pipeline lengths reaching several kilometers. The rated pressure of piston pumps can usually reach 10-30MPa (much higher than that of centrifugal pumps), which can effectively overcome the pipeline along 程 resistance and elevation difference, meeting the needs of long-distance lifting.
2. Coping with complex pipe network topology: In municipal sewage lifting pump stations, if there are multi-branch pipelines or obstacles to cross (such as rivers, railways), the high-pressure characteristics of piston pumps can.. ensure the stable transportation of sewage and avoid transportation interruption caused by insufficient pressure.

II. Outstanding Impurity Resistance and Wear Resistance Performance

1. Handling Sewage with High Solid Content: Municipal sewage often contains solid impurities such as sediment, fibers, and organic debris. The piston and cylinder block of piston pumps use wear-resistant materials, and the seal structure is designed to allow a small amount of solid particles to pass through, reducing the risk of blockage.
2. Reducing Impeller Wear Issues: Unlike centrifugal pumps that rely on impeller rotation to convey media, the reciprocating structure of piston pumps avoids direct impact between the impeller and impurities. This makes them particularly suitable for conveying sewage containing fibrous substances (such as paper towels and cloth strips), reducing the probability of impeller entanglement.

III. Stable Flow Rate and Flexible Regulation

1. Constant Flow Rate Conveying Characteristic: Piston pumps are positive displacement pumps. When the rotation speed is constant, the flow rate is hardly affected by pressure fluctuations, making them suitable for scenarios in municipal sewage systems that require high flow rate stability (such as the quantitative dosing process in sewage treatment technology).
2. Flow Rate Regulation Methods: Stepless flow rate regulation of 0-100% can be achieved by adjusting the piston stroke length or motor rotation speed. This adapts to the characteristic of municipal sewage volume changing with time periods (e.g., the difference in water discharge during morning and evening peaks) and avoids the energy waste of centrifugal pumps caused by valve regulation.

IV. Energy Efficiency and Long-Term Operational Economy

1. Significant Efficiency Advantage Under High-Pressure Conditions: The efficiency of centrifugal pumps decreases drastically under high pressure, while the efficiency of piston pumps is significantly higher than that of centrifugal pumps under high pressure. Long-term operation can reduce energy consumption costs by more than 30%.
2. Long Service Life Reduces Maintenance Costs: The replacement cycle of wear-resistant components (such as pistons and sealing rings) can reach 2-3 years, which is much longer than that of centrifugal pump impellers (usually 1-2 years). Moreover, there is no need to disassemble the entire pump body during maintenance, reducing the frequency of shutdowns for inspection and repair in municipal engineering.

V. Excellent Sealing Performance, Adapting to Environmental Protection Requirements

1. Low Leakage Risk: Piston pumps adopt a reciprocating sealing structure, and the specific sealing pressure can automatically increase as the medium pressure rises. This prevents sewage leakage from polluting the environment and complies with the environmental protection standards for municipal engineering.
2. Corrosion-Resistant Design: To address the acid-base components in municipal sewage (with a pH value usually ranging from 6 to 9), corrosion-resistant materials such as stainless steel and fluororubber can be used to manufacture pistons and cylinder blocks, extending the service life of the equipment.

VI. Adaptation to Special Working Conditions

1. Conveying High-Viscosity Sewage: When the viscosity of sewage increases due to organic fermentation (e.g., effluent from septic tanks), the positive displacement conveying principle of piston pumps is not affected by changes in viscosity. In contrast, the flow rate of centrifugal pumps decreases significantly as viscosity increases.

In summary, the advantages of piston pumps in municipal sewage systems are concentrated in their high-pressure conveying capacity, impurity resistance, efficiency and economy, and long-term reliability, making them an ideal choice under complex working conditions.