SU897286A1

SU897286A1 - Apparatus for replacing large-size material into mill

Info

Publication number: SU897286A1
Application number: SU802921082A
Authority: SU
Inventors: Анатолий Борисович Сыса; Галина Ивановна Сыса
Original assignee: Белгородский Филиал Института "Механобрчермет"
Priority date: 1980-05-05
Filing date: 1980-05-05
Publication date: 1982-01-15

Description

(54) УСТРОЙСТВО ДЛЯ ВОЗВРАТА КРУПНОГО МАТЕРИАЛА В МЕЛЬНИЦУ(54) DEVICE FOR RETURNING LARGE MATERIAL TO THE MILL

II

Изобретение относитс к технике дл измельчени твердых материалов и может примен тьс в металлургической , химической и строительной отрасл х промышленности.The invention relates to a technique for grinding solid materials and can be applied in the metallurgical, chemical and construction industries.

Известно устройство дл возврата крупного материала в мельницьт самоизмельчени , состо щее из подъемного узла и возвратной трубы, в которой материал перемещаетс с помощью винтового шнека Г11.A device for returning coarse material to an autogenous grinding mill is known, consisting of a lifting unit and a return pipe in which the material is moved by means of a G11 screw screw.

Недостатком данного устройства вл етс то, что крупный материал (галька) возвращаетс в рабочее пространство мельницы без изменени своего гранулометрического сгостава, при этом снижаетс производительность мельницы и эффективность ее работы.The disadvantage of this device is that the coarse material (pebbles) returns to the working space of the mill without changing its grain size distribution, while reducing the productivity of the mill and the efficiency of its operation.

Наиболее близким к изобретению вл етс устройство дл возврата крупного материала в мельницу, включающее подъемный узел, возвратнуюClosest to the invention is a device for returning coarse material to a mill, including a lifting unit, returnable

трубу, защитный козырек и направл |ющий конус .pipe, protective visor and guide cone.

Данному устройству присущ тот же недостаток. Кроме того, вывод крупных классов или их части и поддрабливание в отдельной дробилке, которое обычно примен етс на практике дл повышени эффективности процесса измельчени , ведет к повышению капитальных затрат и сни10 жает надежность работы цикла в целом (из-за наличи ленточных конвейеров , узлов перегрузки, дробилок и т.д.).This device has the same drawback. In addition, the withdrawal of large classes or parts of them and cracking in a separate crusher, which is usually used in practice to increase the efficiency of the grinding process, leads to an increase in capital costs and reduces the reliability of the cycle as a whole (due to the presence of conveyor belts, overload nodes , crushers, etc.).

Целью изобретени вл етс повы15 шение производительности мельницы.The aim of the invention is to increase the productivity of the mill.

Claims

The goal is achieved by the fact that a device for returning coarse material to a mill, including a lifting unit, a return pipe, a rear visor and a guide cone, is provided with a crushing cone fixedly positioned inside the dego cone. In the drawing, xe is shown a device, a slit. A device for returning a coarse material to the mill consists of a lifting unit 1, a return pipe 2, in which material can be transported, for example, by means of a hydromonitor, a guiding cone 3, lined from the inside by armor plates, Fraction cone 4, which is supported by its large base on the bearing 5, connected to the crosshead 6, mounted on a protective goat 7, protruding into the working space. Such a connection provides the possibility of rotation of the crosspiece 6 connected to the drum mill, relative to the crushing cone 4, rigidly connected to the fixedly fixed wipe 8, the guide cone 3 is offset with respect to the axis of rotation of the mill drum, and the crushing cone 4 is coaxially arranged with rotating unloading pin. The sealing washer 9 is attached to the lower base of the guide cone 3 and is designed to prevent spillage of large particles. The device for: returning coarse material to the mill works in the following way. The lug, using, for example, a slit sieve, coarse material with the help of a lifting unit 1 lifts up and is reloaded into the return pipe 2, by which it is sprinkled with a hydromonitor to a guide cone 3, where it falls into the annular space between the lining of the cone 3 and crushing cone 4. When the eccentrically mounted cone 3 rotates relatively uncontrollable cone 4, the material 64 passing through the gap of the material emitted by them breaks, which later falls into the working space of the mill. A bearing 5 mounted on a cross beam 6 mounted on a protective visor 7 prevents the crushing cone 4 from being displaced relative to the axis of rotation of the unloading pin, and the fixed rod 8 prevents the crushing cone 4 from turning. The sealing washer 9 prevents large particles from spilling into the unloading axle. The material subjected to grinding and crushing of 4 cones by crushing the melodies has much less resistance to destruction in the working space of the mill, as a result of which its productivity is increased. The proposed device provides the high efficiency of the mills by podraplelivaniya return large particles and increases the reliability of the grinding cycle due to the simplification of its scheme. Claims An apparatus for returning coarse {Material to a mill, including a lifting unit, a return pipe, a protective visor and a guide body, characterized in that, in order to increase the productivity of the mill, the device is provided with a crushing cone fixedly located inside the guide cone. Sources of information taken into account in the examination 1. UK patent number 994280, cl. B 2 A, 1965. 2 ,. USSR author's certificate number 670333, cl. B 02 C 17/18, 1978 (prototype).