In construction and municipal engineering, in order to maintain the dry earth dug, most of them use well point dewatering vacuum units to reduce the water table. Before excavation, a certain number of well point pipes are buried, Utilize the vacuum pump to suck the groundwater, make the water level drop at the lowest point, keep the foundation pit dry, keep the construction normal proceeding. Now to introduce down the use of dewatering pump requirements. Well point dewatering pump First, the point dewatering pump Features (1) lightweight equipment: compact structure, small size, narrow site can enter, you can also fall deep, is conducive to excavation. (2) good performance: high vacuum, pumping large, suction depth of up to 9.5 meters, the excavation depth can be increased accordingly. (3) Reliable operation: The unit has no mechanical friction parts and is not prone to failure. Vacuum pumps use high performance mechanical seals, eliminating the need to frequently change seals. Second, the well point dewatering pump requirements (1) site must be solid foundation, placed steady. Tank can not enter the debris. Field use, motor parts must be placed awning provided by the factory. (2) When using the entire well point precipitation system is carried out in a vacuum, where the requirements of the pipeline interface seal is good, otherwise it will greatly reduce the efficiency. (3) The tank must be filled with water before use, open the inlet valve, start the vacuum pump until the groundwater pumping up, according to the size of the water, gradually reduce the inlet valve. (4) Well point precipitation system unit and well pipe layout is based on the size of the pit, depth, soil quality, groundwater level, flow and precipitation depth may be. The use of early vacuum low displacement, the size of the water depth, and then reduce the amount of drainage to improve the vacuum, lower groundwater levels. (5) The working vacuum of the unit can generally reflect the water level at the well point during the precipitation, that is, the vertical distance from the inlet of the unit. If the degree of vacuum is -0.05MPa, then the water level is about 5 meters. (6) filter bucket should be cleaned regularly to avoid impurities into the vacuum pump damage to the pump, long-term shutdown do not, the water tank and pump water should be shined, so as to avoid corrosion and cracking. Further Reading: pump valve pipe fittings Exhibition Water Expo Xiamen exhibition of marine equipment Internet + Forum Yiwu Fair 2016 exhibition mold top ten brands of the Internet information industry (Xiamen) Technology Co., Ltd. Author: Asian pumps Network Editor: Yao Xiaoxia (QQ / WeChat: 2355962924) http://beng.liuti.cn/ (Service Hotline: 400-6030-811)