SU975083A1

SU975083A1 - Apparatus for crushing material

Info

Publication number: SU975083A1
Application number: SU813294406A
Authority: SU
Inventors: Александр Федорович Седов; Валерий Петрович Леонтьев; Александр Афанасьевич Егоров; Николай Герасимович Боровинский
Priority date: 1981-03-18
Filing date: 1981-03-18
Publication date: 1982-11-23

Description

(54) УСТРОЙСТВО ДЛЯ ДРОБЛЕНИЯ МАТЕРИАЛОВ(54) DEVICE FOR CRUSHING MATERIALS

1one

Изобретение относитс к устройствам дл измельчени материалов и может быть применено в строительной , горнорудной и других отрасл х промышленности.The invention relates to a device for grinding materials and can be applied in the construction, mining and other industries.

Известно устройство дл дроблени и просеивани сыпучего материала, эффективность дроблени в котором достигаетс за счет равномерной по-, дачи материала на рабочий орган, содержащее подаю11ий транспортер, наклонную , площадку (желоб), дробилку с рабочим органом, перфорирова,нную решетку, установленную перед рабочим органом дробилки, атакже выбросито дл просеивани и дополнительный рабочий орган, установленный с возможHodTbro вращени его навстречу основному ротору. Така конструкци устройства обеспечивает равномерную загрузку сыпучего материала по длине ротора при подаче классифицированного материала СИ.A device for crushing and sifting bulk material is known, the crushing efficiency of which is achieved by uniformly feeding material onto a working body containing a feeding conveyor, inclined, pad (chute), a crusher with a working body, perforated, lattice installed in front of the working crusher body, as well as being thrown out for sifting; and an additional tool body installed with the possibility of rotating it towards the main rotor. Such a device design ensures uniform loading of the bulk material along the rotor length when feeding the classified material SI.

-г -g

Однако при подаче неклассифициро .ванного сырв резко снижаетс эффективность устройства. Кроме того, така конструкци значительно усложн ет дробильное устройство, повышает металлоемкость и энергоемкость установки .However, when feeding unclassified syrses, the efficiency of the device drastically decreases. In addition, such a design significantly complicates the crushing device, increases the metal consumption and energy consumption of the installation.

Наиболее близким к предлагаемому вл етс устройство дл дроблени материалов, преимущественно угл , - содержащее наклонно установленный колосниковый грохот, бункер подрешетного продукта и молотковый роторГ2.The closest to the present invention is a device for crushing materials, mainly coal, containing an inclined grate screen, a bunker of the undersize product, and a hammer rotor G2.

.Однако дл этого устройства харакAQ терна недостаточно высока эффективность дроблени .However, for this device, the turn quality is not high enough.

Цель изобретени - повышение эффективности дроблени за счет равномерного распределени материала по The purpose of the invention is to increase the efficiency of crushing due to uniform distribution of the material in

15 длине ротора.15 rotor length.

Указанна цель достигаетс тем, что устройство дл дроблени материалов , преимущественно угл , содержа20 щее наклонно установленный колосниковый грохот, бункер подрешетного продукта и молотковый ротор, снабжено лотком, установленным за колосниковым грохоотом заподлицо с ним, This goal is achieved by the fact that a device for crushing materials, mainly coal, containing an inclined grate screen, a bunker of the undersize product and a hammer rotor, is provided with a tray installed behind the grate screen flush with it,

25 а за лотком под углом, равным половине угла наклона грохота, смонтирован распределитель, выполненный в виде коробчатого желоба, днище которого вогнуто, при этом величина прогиба 25 and behind the chute at an angle equal to half the angle of the screen, mounted distributor, made in the form of a box gutter, the bottom of which is concave, while the amount of deflection

Claims

The 30 bottoms of the distributor at the outlet and the entrance of the material and the width of the bottom at the exit and at the entrance are related by a = 1.5.8 1.75, F where a is the deflection of the bottom at the outlet of the distributor; b - distribute the bottom deflection at the entrance; I; c - the bottom of the bottom of the outlet L, Predelitel; d - myrima bottoms at the inlet of the distributor. FIG. 1 schematically shows a device for crushing bulk materials; in fig. 2 material distributor i A device for crushing bulk materials contains a grate fan-shaped screen 1 installed at an angle to the horizon: equal to B-O-bo under the screening surface of which is located the box 2 of the underlattice product, screen 1, and hammer hammer bilk 3 Between the grate bars: m screen 1 and hammer crusher 3 a tray 4 is installed, which is connected to the billet 3 via a distributor 5, made in the form of a box-shaped groove installed at an angle to the horizon equal to half the screen angle of screen 1, i.e. 25-30 °. The bottom b (Fig. 2) of the distributor 5, is made concave and with a variable cross-section across the width. The device works as follows. Bulk material entering the screening surface of the grate 1, forms a stream shaped by the shape of the supplying device. In the course of the flow movement (under the action of the component of gravity on the inclined at an angle to the horizon section of screen 1, small classes of bulk material, the particle size of which is smaller than the gaps between the grates, are sifted into the box 2 of the undersize product. The remaining part of the bulk material (supergrated The screen dummy 1) continues to move - on the surface of the bars of screen 1 and tray 4 to the window of the crusher 3, with Em, the material remains concentrated mainly in the central surface of the grid bars, because They are constant in magnitude and direction, constituting the force of gravity, which coincides with the direction of the longitudinal axis of screen 1 and tray 4. In addition, the gaps between the grate serve as guides along which the moving, sieve product retains the primary distribution of Material corresponding to the initial flow cross section. Moving further, the superlattice product arrives at the pierced bottom 6 of the distributor 5. For each particle of bulk material located on the inclined curved bottom it The distributor 5, besides the component of the gravity force coinciding with the direction of the longitudinal axis of screen 1 and tray 4, is also a component of the same gravity directed perpendicularly to the movement of the flow, under the action of which the particle deviates from the original direction of movement toward the side walls of the distributor 5 (FIG. 2). As a result, there is a fan-shaped, uniform distribution of the bulk material over the entire cross section of the distributor 5 and the corresponding filling of the working chamber of the hammer crusher 3 along the entire length of its rotor. The even distribution of the material allows a greater amount of it per unit of time to be supplied to the working chamber of the crusher, which increases its productivity, and the increase in the working area of the material’s contact with the working bodies (hammers) of the crusher improves the quality of crushing and increases its efficiency in general. . Apparatus of the invention: A device for crushing materials, preferably coal, containing an inclined grate screen, a bunker of the undersize product. And a hammer rotor, so that, in order to increase the crushing efficiency due to uniform distribution of the material along the rotor length , it is equipped with a tray installed behind the grizzly screen flush with it, and behind the tray at an angle equal to half the yrfia of the slope of the screen, mounted distributor, made in the form. box trough, the bottom of which is concave, while the amount of deflection of the bottom of the distributor at the outlet and the entrance of the material and the width of the bottom at the exit and inlet are related by the ratio a s -1 - F - where a is the value of the deflection of the bottom at the outlet of the distributor; b is the amount of deflection of the bottom at the inlet of the distributor; c is the bottom width at the outlet of the distributor;

d -. the width of the bottom at the entrance of the distributor.

Sources of information taken into account in the examination

certificate of the USSR 02 C 18/00, 1973.

certificate of the USSR 02 C 21/02, 1972