SU1708428A1

SU1708428A1 - Method for thickening hydraulic mixture

Info

Publication number: SU1708428A1
Application number: SU894773386A
Authority: SU
Inventors: Витольд Витольдович Пак; Дмитрий Эдуардович Антонов; Эдуард Иванович Антонов
Original assignee: Донецкий политехнический институт
Priority date: 1989-12-25
Filing date: 1989-12-25
Publication date: 1992-01-30

Abstract

Изобретение относитс к технике сгущени , позвол ет повысить его 'эффективность и снизить потери энергии. Загр зненна среда и рабочий поток смешиваютс до центробежно-струйного устройства и через патрубок 6 поступают в камеру 5 с герметичной стенкой, из которой равномерно по периметру через сопло 3 направл ютс узким потоком по касательной к поверхности криволинейного обтекател 4. При движении вдоль обтекател 4 в ради- ально-сход щемс направлении под действием центробежной силы и сил Магнуса твердые частицы концентрируютс в узком слое возле стенки обтекател 4. После пересечени плоскости, в которой расположен вход в патрубок 1. поток раздел етс на два изолированных между собой: сгущенный шлам удал етс к месту сброса с помощью патрубка 1. а осветленна жидкость с помощью патрубка 2 - к месту ее слива. 1 ил.•««'ЁV4О 004ь. Ю 00The invention relates to a thickening technique, improves its efficiency and reduces energy losses. The contaminated medium and the working stream are mixed to a centrifugal-jet device and through the pipe 6 enter the chamber 5 with a sealed wall, from which evenly around the perimeter through the nozzle 3 are directed a narrow stream tangential to the surface of the curvilinear fairing 4. When moving along the fairing 4 radially convergent direction under the action of centrifugal force and Magnus forces solid particles are concentrated in a narrow layer near the wall of the fairing 4. After crossing the plane in which the entrance to the nozzle 1 is located. It is divided into two isolated between each other: the thickened sludge is removed to the place of discharge with the help of the pipe 1. And the clarified liquid with the help of the pipe 2 - to the place of its discharge. 1 illustration. • «« '' ЁV4O 004b. S 00

Description

Изобретение относится к сгущению и может быть использовано в горнодобывающей, строительной и других отраслях промышленности.The invention relates to thickening and can be used in mining, construction and other industries.

Цель изобретения - повышение эффективности процесса сгущения гидросмеси и снижение потерь энергии.The purpose of the invention is to increase the efficiency of the process of thickening the slurry and reduce energy losses.

На чертеже изображено устройство, в котором осуществляется способ сгущения гидросмеси. 10The drawing shows a device in which the method of thickening the slurry. 10

Устройство содержит соосные между собой шламовый 1 и охватывающий его сливной 2 патрубки, кольцевое сопло 3, криволинейный вогнутый обтекатель’4, направляющий струйный поток от сопла 3 к 15 патрубкам 1 и 2, камеру 5 подвода потока к соплу с подключенным к ней патрубком 6 подвода рабочего потока. При этом стенка 7 камеры 5 выполнена герметичной, т.е. изолированной от наружного пространства. 20The device contains coaxial slurry 1 and drain pipe 2 surrounding it, an annular nozzle 3, a curved concave fairing'4, directing the jet stream from nozzle 3 to 15 nozzles 1 and 2, a chamber 5 for supplying flow to the nozzle with a supply nozzle 6 connected to it work flow. The wall 7 of the chamber 5 is sealed, i.e. isolated from the outside. 20

Способ сгущения гидросмеси осуществляют следующим образом.The method of thickening the slurry is as follows.

Поток гидросмеси, представляющий собой смесь загрязненной среды и рабочего потока, из источника смешения (не пока- 25 зан), через патрубок 6 поступает в камеру 5, из которой равномерно, по периметру с помощью сопла 3 направляется узким потоком по касательной к поверхности криволинейного обтекателя 4. При движении 30 вдоль последнего в радиально-сходящемся направлении под действием центробежных сил и сил Магнуса твердые частицы концентрируются в узком слое возле стенки обтекателя 4. При этом эффективность процесса 35 обусловлена тем, что средняя величина пути частиц поперек потока существенно меньше, благодаря чему при одинаковых величинах продольных скоростей и кривизне линий тока течения процесс сгущения 5 твердой массы возле стенок обтекателя 4 и на входе в шламовый патрубок 1 происходит более интенсивно.The slurry stream, which is a mixture of contaminated medium and the working stream, from the mixing source (not shown 25), through the pipe 6 enters the chamber 5, from which it is directed uniformly along the perimeter by the nozzle 3 in a narrow stream tangential to the surface of the curved fairing 4. When moving 30 along the latter in a radially converging direction under the action of centrifugal forces and Magnus forces, solid particles are concentrated in a narrow layer near the wall of the fairing 4. Moreover, the efficiency of process 35 is due to the fact that the average value across the flow path of the particles is substantially less, thus at identical values of the longitudinal velocity and curvature flow streamlines the process of thickening 5 of the solid mass nearest to the fairing walls 4 and at the entrance of slurry nozzle 1 is more intense.

После пересечения плоскости, в которой расположен вход в патрубок 1, поток разделяется на два изолированных между собой: сгущенный шлам удаляется к месту сброса с помощью патрубка 1, а осветленная жидкость с помощью патрубка 2 - к месту ее слива.After crossing the plane in which the entrance to the pipe 1 is located, the flow is divided into two isolated from each other: the condensed sludge is removed to the discharge site using the pipe 1, and the clarified liquid with the pipe 2 is removed to the place of its discharge.

Claims

The invention relates to thickening and can be used in the mining, construction and other industries. The purpose of the invention is to increase the efficiency of the slurry thickening process and reduce energy loss. The drawing shows a device in which a slurry thickening process is carried out. The device contains coaxially interconnected Shlzma 1 and the drain 2 enveloping it, an annular nozzle 3, a curvilinear concave fairing 4, directing the jet flow from nozzle 3 to nozzles 1 and 2, chamber 5 for supplying flow to the nozzle with working flow connection 6 connected to it . In this case, the wall 7 of the chamber 5 is sealed, i.e. isolated from outdoor space. The slurry thickening process is carried out as follows; The slurry stream, which is a mixture of polluted medium and the working stream, from a mixing source (not shown), enters chamber 5 through which nozzle, from which evenly, along the perimeter, by means of nozzle 3, is directed by a narrow stream tangentially to the surface of a curvilinear fairing. 4. When moving along the latter in a radially convergent direction under the action of centrifugal forces and Magnus forces, solid particles are concentrated in a narrow layer near the wall of the fairing 4. In this case, the efficiency of the process is due to the fact that The size of the particle path across the flow is much smaller, so with the same longitudinal velocity and curvature of the flow current, the process of thickening the solid mass near the walls of the fairing 4 and at the entrance to the slurry nozzle 1 is more intense. After crossing the plane in which the entrance to the nozzle 1 is located, the flow is divided into two isolated between each other: the thickened sludge is removed to the place of discharge by means of the nozzle 1, and the clarified liquid with the help of the nozzle 2 to the place of its discharge. The formula of the method of thickening the slurry, including the supply of radially converging along a curvilinear concave curved obtrusion of a flow of a polluted medium and a working ring-flow, the condensation of the slurry during flow along the fairing, followed by turning it into a linear flow, coaxially, an obstrnant part of the pattern, an obstine sweep, along with the fairing, followed by turning it into a straight flow, coaxially, and an obstreplenation of an obstine sweep, along with the fairing. the axial zone, and the clarified liquid from the peripheral ring, characterized in that, in order to increase the efficiency of the slurry thickening process and reduce losses energy, the polluted medium is mixed with the working stream and fed to the condensation as a slurry stream, while the condensation and subsequent withdrawal of the condensed slurry and clarified liquid are carried out in isolation from the external environment.