What Is Sieve Bend Screen

JX Filtration June 3, 2025 Sieve Bend Screen

1. Structure and Function

A sieve bend screen consists of a set of parallel metal or plastic bars, typically installed at an angle in channels or at the inlet of pump stations. Its primary function is to intercept large floating debris (such as branches, plastic bags, stones, etc.) and prevent clogging or damage to downstream equipment like pumps and treatment systems.

2. Classification and Features

By Screen Spacing:

Coarse: 50–100 mm
Medium: 10–40 mm
Fine: 1.5–10 mm
Ultra-fine: 0.5–1.0 mm

By Cleaning Method:

① Manual Cleaning:
Suitable for small-scale wastewater treatment plants where daily screenings are less than 0.2 m³. Installed at an inclination angle of 30°–60°, it requires more labor but has lower initial cost.

② Mechanical Cleaning:
Preferred for large-scale treatment plants, with inclination angles up to 90°, offering high automation and efficiency. Representative equipment includes: