Water-Lifting Device

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Water-Lifting Device


a water lift used for transferring fluids, mainly water.

In the past the term“water-lifting device” was used to describe all technological means for transferring water, including pumps. At present the term is usually used for machines and devices that transfer fluids mainly by changes in the potential energy of their position. The simplest water-lifting devices consist of a crane and a hoist for lifting water from wells. More complex devices, including Archimedes’ screw, the waterwheel, and the bucket conveyor, provide continuous flow of large volumes of water.

Archimedes’ screw consists of a housing or a trough and a screw, which rotates (about 50 rpm) from a wind engine or other engine. The screw is installed at an angle of about 40° to the horizontal, and one end is submerged under the water. During rotation the screw surface puts pressure on the fluid and transfers it along the housing or trough, lifting it 3 or 4 m.

There are several forms of waterwheel. Basically, the waterwheel has freely suspended buckets that fill with water below and empty the water (tipping over) over the trough, or the buckets may be replaced by blades. The buckets are used for transferring large amounts of water up 2-6 m; they take their power from wind engines or other engines. The bucket conveyor is used to lift liquids up to 25 m; the working element of a bucket conveyor is an endless chain with buckets attached to it.

There are devices similar to the bucket conveyor, called chain pumps or flange or cellular belt conveyors, in which the fluid is taken up by compartments on a continuous chain or belt. The fluid is kept in the compartments by the force of surface tension. At the present time water-lifting devices are used in underveloped countries, where they are still used for irrigating or draining land and other similar work.


Gribanov, I. P. Prosteishie vodopod’emniki dlia orosheniianebol’shikh ploshchadei. Moscow, 1943.943.
Florinskii, M. M., and V. V. Rychagov. Nasosy i nasosnye stantsii,tantsii, 3rd ed. Moscow, 1967.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The second involves a key water-lifting device, the bottomless bucket, during the nineteenth-century expansion of ranching on the Pampas of Argentina.
Although Africans and Afro-descendants do not seem to have played as great a creative role in establishing herding practices on the Pampas as in New Spain during colonial times, in the early nineteenth century the presence of Senegambians on ranches while the colonial herding ecology underwent a major transformation resulted in the introduction of an African water-lifting device: the bottomless bucket, or balde sin fondo.
By the end of the nineteenth century, the windmill had replaced that menagerie of water-lifting devices. In the 1880s, ranchers on the Pampas began to import windmills from North America, where inventors had refined that ancient technology with a steel tower, steering rudder, automatic governor and suction pump that could be inserted into wells hundreds of feet deep.
Madhya Pradesh Government has proposed to provide funds for water-lifting devices and construction of stop-dams in place of the earlier approved components of farm ponds and recharge of dugwells.
Roman London had always been thought of as a primitive city at the edge of the empire, but the discoveries of a beautiful bronze arm and two of the most sophisticated mechanical water-lifting devices discovered anywhere in the Roman Empire have turned convention on its head.