SU918568A1

SU918568A1 - Airlift

Info

Publication number: SU918568A1
Application number: SU802949840A
Authority: SU
Inventors: Виктор Георгиевич Гейер; Владимир Георгиевич Миргородский; Евгений Васильевич Усков; Валерий Георгиевич Миргородский; Владимир Семенович Пащенко
Original assignee: Донецкий Ордена Трудового Красного Знамени Политехнический Институт
Priority date: 1980-07-02
Filing date: 1980-07-02
Publication date: 1982-04-07

Description

(54) ЭРЛИФТ(54) ERLIFT

V .1. V .1.

Изобретение относитс к.насосо;троению , в частности, к конструкции гидротранспорт«ых установок дл перемещени загр зненных жидкостей и может быть использовано при проектировании гидротранспортных систем в промышленности, строительстве и сельском хоз йстве.The invention relates to a pump; construction, in particular, to the design of hydrotransport installations for the movement of contaminated liquids and can be used in the design of hydrotransport systems in industry, construction and agriculture.

Известен эрлифт, содержащий подъемную трубу, в верхней части которой установлен воздухоотделитель, а в нижней - смеситель., соединенный с устройством всасывани и воздухопр водом . При подаче воздуха в смеситель нижней ступениопроисходит / подъем гидросмеси к воздухоотделителю , откуда она подаетс во вторую ступень эрлифта и далееПЗ. . Недос7 атком данного эрлифта вл етс увеличение потери энергии изза разгона гидросмеси в подъемной трубе эрлифтной установки.The airlift is known, containing a lifting pipe, in the upper part of which an air separator is installed, and in the lower part - a mixer. Connected to the suction device and the air intake pipe. When air is supplied to the lower stage mixer, the hydraulic mixture rises to the air separator, from where it is fed to the second stage of the airlift and further to the PZ. . The disadvantage of this airlift is an increase in energy loss due to the acceleration of the slurry in the riser of an air-lift unit.

Наиболее близким к изобретению вл етс эрлифт, содержащий подъем-,Closest to the invention is an airlift containing lift-,

ную трубу и расположенный в ее нижней части смеситель, подсоединенный к воздухопроводу и всасывающему патрубку Г2, a new pipe and a mixer located in its lower part, connected to the air duct and the G2 suction inlet,

Недостатком известного эрлифта вл етс низкий КПД.A disadvantage of the known airlift is low efficiency.

Цель изобретени - повышение КПД.The purpose of the invention is to increase efficiency.

Поставленна цель достигаетс тем, что подъемна .труба в зоне, примыкающей к смесителю, снабжена разto гонным участком, диаметр которого составл ет 0,7-0,9 от диаметра подъемной трубы, а длина - не менее 8 ее диаметров.This goal is achieved by the fact that the lifting pipe in the zone adjacent to the mixer is provided with a razor-end section, the diameter of which is 0.7-0.9 of the diameter of the lifting pipe, and a length of at least 8 of its diameters.

На чертеже схематически показан The drawing shows schematically

15 эрлифт, продольный разрез.15 airlift, longitudinal section.

Claims

The airlift contains a lifting pipe 1 and a mixer 2 located in its lower part, attached to the air line 3 and the suction inlet 4, and the lifting pipe 1 in the zone adjacent to the mixer is provided with an accelerating section 5 of diameter d which is 0.7-0, 9 from the diameter, 39 pa D of the lifting pipe 1, a length t not less than 8 of its diameters. Airlift works as follows. When air is supplied through the air, the wire 3 to the mixer 2 and the lifting pipe 1 forms an aero hydraulic mixture, lifting along the lifting pipe 1 to the air separator. The slurry enters the lifting pipe 1 through the suction pipe 4. In the air separator, the slurry separates from the air and enters for the intended purpose. The capacity of the airlift is primarily determined by air flow, immersion and the diameter of the riser 1. In airlifts, the air pressure along the height of the riser tube T from the mixer 2 decreases, consequently the air expands, its speed increases and the speed of the slurry increases, which is associated with energy costs. In addition, the increase in the speed of the slurry causes more wear lifting. pipes 1 and large losses of the kinetic energy of the slurry at its exit from the riser 1. Reducing the diameter of the riser 1 in the booster section 5 makes it possible to increase the speed of the slurry at the beginning of the riser 1. But when the diameter of the riser decreases, the airlift performance decreases. In order to maintain a constant production, the diameter of the riser pipe 1 in the upper part increases so that the equivalent diameter of the riser pipe 1 remains the same. Due to this design, the difference in speeds along the length of the riser 1 and the acceleration of the slurry is reduced, which accordingly leads to a decrease in the energy loss of the slurry acceleration and an increase in the efficiency of the airlift. The economic effect of the invention is due to the reduction of energy consumption for raising the slurry, i.e. increased efficiency airlift. Claims of the invention: Airlift comprising a lifting pipe and a mixer located in its lower part, connected to an air conduit and a suction inlet, characterized in that, in order to increase efficiency, the lifting pipe in the zone adjacent to the mixer is provided with an accelerating section, the diameter of which is 0 , 7-0.9 of the diameter of the riser, and the length - not less than 8 of its diameters. Sources of information taken into account during the examination 1. USSR author's certificate No. 377557, cl. F Ol F 1/00, 1971.

2. USSR author's certificate ff 500379, cl. F 0 F 1/20, 1973.