Structure and Selection of Sewage Pumps

As the core equipment of modern drainage systems, sewage pumps are designed to efficiently handle wastewater containing solid particles, fibers or high concentrations of impurities. Unlike ordinary pumps, its structure strengthens abrasion resistance and anti-clogging ability, which can cope with the challenges of complex scenarios such as municipal pipe networks, industrial wastewater, construction sites and agricultural drainage. Whether it is emergency drainage during heavy rainfall and flooding, or the daily operation and maintenance of wastewater treatment plants, sewage pumps, with their strong impurity transport capacity and durability, have become a key equipment to ensure environmental safety and production continuity. Next, we will analyze the structural characteristics of sewage pumps, applicable scenarios and scientific selection strategy, to help you accurately match the needs and improve sewage efficiency.

Structure and Working Principle

Design Feature

1. Wear-resistant material: The impeller and pump body are made of high chromium alloy, cast iron or stainless steel to enhance the wear resistance.

2. Anti-clogging design: large runner impeller or vortex structure to reduce the risk of impurity winding or clogging.

3. Sealing system: mechanical seal or double seal design to prevent sewage leakage.

Operating Principle

The motor drives the impeller to rotate at high speed, which produces centrifugal force to suck sewage into the pump body, and solid particles are strongly discharged with the liquid, ensuring continuous and efficient sewage discharge.

Application Scenario

1. Urban drainage system

Urban drainage system is one of the most widely used fields of sewage pump. In rainy season and flood season, urban drainage system needs to discharge a large amount of rainwater quickly to avoid urban water accumulation. Sewage pump can quickly lift sewage into sewage treatment plant or municipal pipe network to ensure the normal operation of the city.

2. Sewage treatment plant

Sewage treatment plant is an important application place of sewage pump. In the process of sewage treatment, sewage needs to pass through multiple treatment units, such as grit chamber, sedimentation tank and aeration tank. Sewage pump plays the role of conveying sewage and returning sludge in these units, ensuring the smooth progress of sewage treatment process.

3. Building drainage system