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绳子与水桶

160 bytes removed, 03:43, 25 October 2015
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产水量:10米深时0.25 升/秒。
The simplest and cheapest method of lifting groundwater remains a rope and bucket in a wide, shallow well. This type of well can operate up to a depth of 100 metres, although they rarely exceed 45 metres. The rope and bucket lifter can be operated by humans or animals. Human operated rope and bucket lifters typically raise 10从地下打水最简易、廉价的的方法仍然是运用绳子和水桶在宽浅的井中提水。这类井最深能达100米,虽然少有超过45米深的。绳桶提水装置可以由人力或畜力驱动。人力绳桶装置通常每分钟能从10-15 litres/min from depths of 1015米深处提出10-15 metres whereas an animal water lifter can raise 150 litres/ min from 15 metres. In the animal driven rope and bucket lifter, the rope attached to the bucket is passed over a pulley and fixed to the animal. The animal is driven down on an earthen ramp sloped at an angle of 515升水,而畜力装置每分钟能从15米深处提出150升水。在畜力驱动的绳桶提水装置中,系在桶上的绳子穿过滑轮固定在动物身上。为了将水提起,动物会从一个5-10 degrees in order to lift the water.10度的斜土坡上往下赶。
A self-emptying container or mohte can be used in place of the bucket. The system consists of a leather container, shaped like a funnel. The container can typically hold between 100 to 150 litres. This arrangement can discharge about 130 litres/ min at depths of up to 9 metres.
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