Negative pressure air jet deep well dewatering device of foundation pit
A deep well precipitation and air jet technology, which is applied in infrastructure engineering, construction, etc., can solve the problems of reduced precipitation efficiency, slow precipitation speed, waste of human resources, etc., and achieve the effects of easy construction, increased precipitation speed, and high work efficiency
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[0012] Refer to figure 1 , figure 2 , The present invention includes a negative pressure system 1, a positive pressure system 2 and a deep well pipe assembly 3. The negative pressure system 1 is composed of a vacuum pump 11, a drain pipe 13, a vacuum water main 14 and a vacuum water distribution pipe 15. The positive pressure system 2 consists of air Compressor 21, air manifold 22, air manifold 23, switch valve 25 and gas nozzle 24. Deep well tube assembly 3 is composed of well pipe 31 and well cover 32. The well cover 32 is arranged on the top of the well pipe 31 and is connected to it in a sealed manner. A vacuum tube hole 321, an air tube hole 322 and a vent hole 323 are provided, the bottom of the well tube 31 is closed, and a small hole 311 is partially provided in the tube body;
[0013] The drain pipe 13 and the vacuum main pipe 14 of the negative pressure system 1 are respectively connected to the two ends of the vacuum pump 11, and the vacuum water distribution pipe 15 is c
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