1, Shanghai Shenquan Pump Industry

2. Jiangcheng Pump Industry

3. Zhuo Yue Pump Industry

4. Hengli Pump Industry

5. Tian Liang Pump Industry

6. Yu Lian Pump Industry

7. Xunfeng Pump Industry

8. Shuanglu Water Pump

9. Huangshan Pump Industry

10, Shenyang Water Pump

Screw pump

Also known as "screw pump" and "Archimedes screw pump". A pump that uses the rotation of spiral blades to make water spiral up along the shaft. It consists of a shaft, spiral blades and a shell. When pumping water, the pump is placed obliquely in the water, so that the inclination angle of the main shaft of the pump is smaller than that of the spiral blade, and the lower end of the spiral blade is in contact with the water. When the prime mover drives the screw pump shaft to rotate through the speed change device, water enters the blades and rises along the spiral flow channel until it flows out.