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Abstract

The invention relates to a water lifting device; the water lifting device is connected with the water pump of a power engine and a water lifting pipe; the water lifting device consists of an outer pipe and an inner pipe; a narrow conical channel is formed between the conical pipe ends of the inner pipe and the outer pipe; a high-speed fluid injection angle Alpha is formed at a position in which the narrow conical channel extends and converges; suction negative pressure and lifting pushing force are produced at the area in which the injection angle Alpha is located. The water lifting device can lift water at low positions to the height of 400m and then sprays out the water at the spraying speed of 1m / S along the horizontal direction, and effectively solve the problem of supply water to high-rise buildings, can lift the permeable water produced in underground tunnels to the height of 150m and then spray out the water horizontally at the spraying speed of 2.5m / S, and can effectively solve the water drainage problem in severe permeable water accidents of underground tunnels. The water lifting device can surely make great contribution to the rescue of the severe permeable water accidents in underground tunnels.

Description

technical field [0001] The invention relates to a liquid pumping and lifting mechanism, especially a water lifting device, which is suitable for water supply of high-rise buildings and drainage of underground tunnels. Background technique [0002] Usually, for the water supply of high-rise buildings, water pumps have been used to pump the water in the lower pools to the adjacent pools at a height of 30-40m, and then pumped to the adjacent pools above, and so on. Step pumping is used to solve the water supply problem of high-rise buildings, which is both troublesome and increases the cost of use. What also have adopts towerless water supply device to supply water to high-rise buildings, and it needs to be provided with pressure storage tank, compressor and top-floor water reservoir. Because it requires a higher pressure, the equipment is required to have a higher pressure bearing capacity, which not only brings trouble to production, but also increases production costs. And...

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Problems solved by technology

[0003] For the discharge of permeable water in underground tunnels, pumps have been used to lift the discharge. Because the permeable water in underground tunnels contains impurities, the height of pumping pumps is relatively low, and it is difficult to increase the height of pumping water only by pumps. The permeable water in the tunnel cannot be discharged in time and quickly. Once a particularly serious water seepage accident occurs in the underground tunnel, it will make the rescue work more difficult. caused great damage to national property

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