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绳子与水桶

47 bytes removed, 04:00, 25 October 2015
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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米深处提出10-15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.可以自动清空的容器(或被称为mohte)可以用来替代水桶。这一装置由一个形似漏斗的皮制容器、组成。这样的容器通常能容纳100到150升水,能每分钟从最深9米处打水约130升。
The rope and bucket lifter can also be adapted to include two buckets which are raised and lowered alternately. In this case the pulling animal moves in a circular path and with the help of central rotating lever, rope and pulley arrangement the buckets move up and down. Each bucket has a carrying capacity of up to 70 litres. The buckets have a hinged flap at the bottom, which acts as a valve. Guide rods are provided in the well to control the movement of the buckets. The buckets are automatically filled and emptied during operation. This device can lift about 230 litres /min from depths of up to 5 metres.
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