Vacuum pre-pressure water draining device

Abstract

The invention discloses a vacuum pre-pressure water draining device. The vacuum pre-pressure water draining device comprises a water storage tank and a liquid level switch control apparatus; a horizontal pipe network which is connected to an underground water body is installed at the bottom of the water storage tank; a non-return electromagnetic valve is further disposed on the horizontal pipe network; the non-return electromagnetic valve is connected with the liquid level switch control apparatus; a first liquid level switch is further installed at the lower end of the inner side of the waterstorage tank; a second liquid level switch is correspondingly installed at the upper end of the inner side of the water storage tank; and the first liquid level switch and the second liquid level switch are connected with the liquid level switch control apparatus. The vacuum pre-pressure water draining device is reasonable in whole structure and ingenious in design, a single pump body structure is adopted, the cost is reduced, the circulating automatic pre-pressure water draining process is achieved, and the device is quite convenient to use.

Description

technical field [0001] The invention relates to the technical field of equipment used for vacuum preloading soft soil foundation reinforcement, in particular to a vacuum preloading drainage device. Background technique [0002] It is widely used in the pumping and drainage device of "vacuum preloading soft soil foundation reinforcement method" in foundation treatment engineering. There are two kinds of structural devices in the market, one is the early device that directly uses water pumps to pump water for drainage; the other is Water vapor separation pumping and drainage device. [0003] In the early water pumping and drainage devices, water and air enter the pump at the same time, without water and air separation. During vacuum preloading construction, the water in the pump enters the air, resulting in a decrease in pumping efficiency and an increase in energy consumption, which directly leads to the failure of the pump. The loss is serious. [0004] The water-gas separ...

AI Technical Summary

Problems solved by technology

[0003] In the early water pumping and drainage devices, water and air enter the pump at the same time, without water and air separation. During vacuum preloading construction, the water in the pump enters the air, resulting in a decrease in pumping efficiency and an increase in energy consumption, which directly leads to the failure of the pump. Serious loss

[0004] The water-gas separation vacuum preloading method uses a vacuum pump and a water pump together, which improves the work efficiency compared with the old-fashioned water pump direct pumping method; but the technical difficulty of this device lies in the vacuum in the water-gas separation tank. For drainage under negative pressure, it is necessary to use a negative pressure water pump with excellent performance to achieve effective drainage. However, there is a big gap in the ability of domestic negative pressure water pumps to overcome vacuum negative pressure, and the use of high-performance imported products will increase a large equipment cost

Images