SU967579A2

SU967579A2 - Aerator

Info

Publication number: SU967579A2
Application number: SU802995319A
Authority: SU
Inventors: Владимир Иванович Лысоконь
Original assignee: Восточно-Казахстанский Машиностроительный Завод Им.50-Летия Ссср "Восток-Машзавод"
Priority date: 1980-10-20
Filing date: 1980-10-20
Publication date: 1982-10-23

Description

1one

Изобретение относитс к обогащению полезных ископаемьлх методом флотации , предназначено дл получени и равномерного распределени тонкодисперсной пульповоздушной смеси в камерах флотационных машин и вл етс усовершенствованием известного аэратора.The invention relates to the enrichment of minerals by the flotation method, is intended to obtain and evenly distribute the finely dispersed air-pulp mixture in the chambers of flotation machines and is an improvement of the known aerator.

По основному авт, св. № 495090 известен аэратор, включающий ротор центробежного типа с радиальными лопаст ми , закрепленный на полом валу, стакан с отверсти ми дл циркул ции пульпы и статор, выполненный в виде диска с радиально расположенными лопаст ми , при этом ротор выполнен в виде перфорированного раструба, над которым расположен усеченный конус, частично перекрывающий радиальные лопасти 1 . IOn the main auth, sv. No. 495090 is known for an aerator including a rotor of a centrifugal type with radial blades fixed on a hollow shaft, a glass with openings for pulp circulation and a stator made in the form of a disk with radial blades, the rotor being made in the form of a perforated socket over which is a truncated cone, partly overlapping the radial blades 1. I

Недостатком указанного аэратора вл етс недостаточна диспергаци воздушной фазы придонного потока пульпы, так как в нижней части ротора не создаютс зоны разр жений.The disadvantage of this aerator is insufficient dispersion of the air phase of the bottom pulp flow, since no discharge zones are created in the lower part of the rotor.

Целью изобретени вл етс интенсификаци процесса флотации путем повышени диспергировани воздуха в придонном потоке пульпы.The aim of the invention is to intensify the flotation process by increasing the dispersion of air in the bottom pulp stream.

Поставленна цель достигаетс тем, что ротор снабжен радиальными лопас (54) АЭРАТОРThe goal is achieved by the fact that the rotor is equipped with radial lobes (54) AERATOR

т ми, имеющими в поперечном сечении форму сечени Kfynma, расположенными на нижней части ротора и установленными с наклоном по отношению к плоскости ротора.ti, having in cross section the shape of the section Kfynma, located on the lower part of the rotor and set with an inclination relative to the plane of the rotor.

На фиг. 1 изображен аэратор вертикальный разрез; на фиг. 2 - разрез А-А на фиг. 1.FIG. 1 shows a vertical incision aerator; in fig. 2 shows section A-A in FIG. one.

10ten

Аэратор состоит из полого вала 1 с закрепленным на нём ротором 2, и статора 3. Ротор выполнен в виде перфорированного раструба 4, над которым расположен усеченный конус 5, частично перекрывающий радиальные The aerator consists of a hollow shaft 1 with a rotor 2 fixed on it, and a stator 3. The rotor is made in the form of a perforated socket 4, above which there is a truncated cone 5 partially overlapping the radial

15 лопасти 6, расположенные на диске 7, на нижней части которого расположены радиальнь1е лопасти 8, имеющие в поперечном сечении форму сечени крыла и установленные с наклоном по 15 blades 6 located on a disk 7, on the lower part of which radial blades 8 are located, having a cross-sectional shape of a wing in cross section and mounted inclined along

20 отношению к плоскости ротора, с углом атаки, обеспечивающим воздействие подъемной силы. Статор выполнен в виде диска 9 с радиально расположенными лопаст ми 10, прикрепленного к 20 relative to the plane of the rotor, with an angle of attack, providing the impact of lifting force The stator is made in the form of a disk 9 with radially arranged blades 10 attached to

25 стакану 11, имеющему циркул ционные отверсти 12 дл пульпы. Стакан 11 через косынки 13 прикреплен к трубе 14, в которой расположен полый вал 1 и котора неподвижно соединена с 25 a cup 11 having circulation holes 12 for the pulp. The glass 11 through the kerchief 13 is attached to the pipe 14, in which the hollow shaft 1 is located and which is fixedly connected to

Claims

30 housing 15 BEARINGS. The hollow shaft J with a pulley 16 is kinematically coupled to the drive. The aerator works as follows. Through the hollow shaft 1, air is supplied under pressure into the internal cavity of the rotor 2, and through the open, lower end of the perforated socket 4, as the rotor 2 rotates, flotation pulp is sucked from the drive. Under the action of the discharge generated by the rotation of the rotor 2, the pulp-air flow through the perforation of the bell 4 rushes into the space between the cone 5 and the disk 7, where the primary dispersion of the air phase occurs. The further process of air dispersion is influenced by the flow of pulp entering the peripheral parts of the centrifugal rotor 2 through the circulation holes 12 of the cup 11. Vane 6 as a result of the vortex formation at the interface causes large discharge zones that are filled non-dispersed air entering through the socket 4. Non-dispersive air also enters the lower part of the rotor 2 through the socket 4 and the edge of the disk 1. When the rotor 2 rotates from the drive through the pulley 16 and the hollow shaft 1 of the blade 8, lennye with attack angle, providing lift, creating unloading bearings in the housing 15. Under the blades 8 formed .oblast high PRESSURE audio over blades 8 - reduced and 8 for the blades eddy shroud. Vortex formation at the phase boundary, which increases with an increase in the flow of pulp passing through the aerator, leads to the interruption of the capture and subsequent dispersion of air masses that fill the discharge zones created by the additional blades 8. The primary dispersion of the air phase during the passage of the pulp and air mixture the socket 4 and the secondary dispersion in the field of action of the radial blades 6 and 8 of the rotor 2 create conditions for intensive dispersion of the air phase, and the circulation of the pulp through the socket 4 provides the nnuyu tsirkul- tion of natural pulp flow promoting improve intracameral circulation. The proposed aerator design will allow to intensify the flotation process, as well as to increase its service life by reducing axial loads on the bearings. The formula of the invention Aerator on auth. St. No. 495090, characterized in that, in order to intensify the flotation process by increasing the dispersion of air in the bottom pulp flow, the rotor is provided with radial blades having a cross section of the wing section in cross section mounted on the rotor bottom and inclined with respect to the rotor plane . Sources of information taken into account during the examination 1. USSR Author's Certificate No. 495090, cl. B 03 D 1/14, 1974.