Application scenarios：
The horizontal sand discharge screw is mainly used to horizontally transport sand deposited at the bottom of the grit chamber to the sand collection pit or sand discharge port, achieving continuous, stable, and low noise sand discharge operations.
Structure&Principle：
Structure: It is mainly composed of a U shaped trough, helical blades (screw), drive unit (motor/reducer), bearing blocks, sand inlet, and sand outlet; some models include a cover plate and wear resistant bushing.
Principle: The motor drives the helical blades to rotate inside the trough, pushing and lifting the sand particles at the bottom of the grit chamber horizontally toward the sand outlet for discharge. Continuous sand removal is achieved through the continuous pushing action of the screw, and the U shaped trough structure minimizes sand backflow and wear.
Main Features：
1. Enables full enclosure of the horizontal flow grit chamber to reduce odor leakage.
2. Fully automated operation with energy saving and low wear characteristics. 3. Suitable for underground wastewater treatment plants, saving structural space.
4. Can be used to retrofit traditional aerated grit chambers originally equipped with bridge type grit suction machines.
5. Integrated design for grit settling, grit discharge, and scum skimming, ensuring high grit removal efficiency.
