Low-vacuum generation device of single pump for water discharging of sludge and using method of low-vacuum generation device

Abstract

The invention provides a low-vacuum generation device of single pump for vacuum water discharging in a soft clay foundation or a soft soil foundation and a using method of the low-vacuum generation device. The low-vacuum generation device mainly comprises a vacuum pump and a vacuum tank. The starting and the stopping are controlled by electric contact vacuum meters, and the vacuum degree provided by the vacuum providing device is stabilized on a certain preset value by adjusting lower-limit vacuum pressure control parameters of the electric contact vacuum meters. The low-vacuum providing device is especially provided with an air-leakage protection electromagnetic switch, and the vacuum pump is connected with the vacuum tank by a pipeline. The whole structure of the frequency-conversion control adjustable vacuum device comprises five parts: (1) the vacuum pump; (2) the electric contact vacuum meters controlled by the vacuum pump; (3) the vacuum tank; (4) the electric contact vacuum meter controlled by the air-leakage protection electromagnetic valve; (5) the air-leakage protection electromagnetic valve. The low-vacuum generation device and the using method provided by the invention have the advantages that the modular design is adopted, so that the vacuum degree can be randomly set in the range from minus 0kPa to minus 100kPa; in use, the equipment is simple in installation, and simple and convenient in operation, saves electric energy and is high in efficiency.

Description

technical field [0001] The present invention relates to a single-pump low-vacuum generating device used for vacuum drainage in soft clay foundations or soft soil foundations and its application method, especially for silt storage yards and blow-fill sites under vacuum drainage conditions, drainage The anti-sedimentation low-vacuum providing device and the operation method thereof, which are designed for the situation that the body is easily deposited by the silt layer, belong to the related technical fields of geotechnical engineering and environmental engineering. Background technique [0002] In river dredging and dredging projects and sea reclamation projects, the problem of dredging and filling consolidation of soil with high water content will be encountered. For a site filled with high water content silt, if the drainage of the site is not smooth or the clay content of the dredged fill soil is high, the consolidation and settlement will be a long process. During this ...

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Problems solved by technology

[0003] The object of the present invention is to propose a single-pump low-vacuum generating device and its use method for vacuum drainage in soft clay foundations or soft soil foundations. The required low-vacuum pressure can be set arbitrarily according to construction requirements to prevent sludge Blockage occurs in the drainage body, which solves the problems of blockage and low efficiency that are easy to occur when ordinary vacuum sources pump water in the sludge dump

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