CN1068978A - Inner screening centrifugal breaker - Google Patents

Abstract

A kind of inner screening centrifugal breaker that is used for the material fragmentation is specially adapted to materials such as broken clinker, lime stone, lumped coal.Be provided with two crushing chambers in disintegrating machine, two rotors are by same upright connection transmission, and rotor reaches broken purpose with the throwing of material high speed by centrifugal force to counterpunch board.Between two crushing chambers, be provided with the annular screening plant of falling the frustum-like shape, by material broken in the last crushing chamber after screening, the thin material that meets granularity requirements enters aggregate bin through outer discharge channel, and the thick thing that tails over enters down crushing chamber and carries out fragmentation once more, enters aggregate bin after the fragmentation.This crusher structure is simple, and crushing effect is remarkable.

Description

Inner screening centrifugal breaker

The present invention relates to the material crusher technical field, be used in particular for brittle materials such as broken clinker, lime stone, block raw coal.

At present, be applicable to the disintegrating machine of all polymorphic types of various brittle materials, it mostly is the purpose that reaches the material fragmentation by impulsive force or extruding force, for example hammer mill, jaw crusher, impact breaker, vertical shaft crusher, squash type disintegrating machine etc., these disintegrating machines exist all that component wear is serious, wear-out part is changed frequent, finished product granularity and is difficult to shortcomings such as control, power consumption height.The existing disintegrating machine that utilizes the impulsive force broken material, though wear problem is solved, because material disintegrating machine meeting for once in disintegrating machine, still exist the finished product granularity to be difficult to satisfy technological requirement, for this reason, need set up screening setting in the disintegrating machine outside, sieve going out the machine material, thick material after the screening send disintegrating machine broken once more with elevator, forms a cover closed circuit circulatory system, thereby makes technological process become complicated.

The purpose of this invention is to provide a kind of weak point that overcomes above-mentioned disintegrating machine, it is simple in structure, crushing effect is remarkable, has two crushing chambers, the inner screening centrifugal breaker of rotor, interior screen device again.

Adopt following design for achieving the above object: in body, be provided with upper and lower two crushing chambers, a rotor is respectively arranged in two crushing chambers, two rotors are connected by same vertical shaft, between two crushing chambers, be provided with screening plant, this screening plant can carry out interior screening to the material after the above-mentioned broken indoor fragmentation first time, its structure of screening plant is frustum-like shape of annular, and cone angle is 40 °～65 °, is made up of sieve plate and blind plate.Can be in the screening course of work by shaking naturally and mechanical shock raising screening effect, sieve plate is stepped or tabular, for the vibration-type structure, is made by elastomeric material.Broken for the first time material, through behind the screening plant, the fines that meets technological requirement, enter in the outer discharge channel under the sieve plate, thick material enters by sieve plate district, blind plate district in the crushing chamber of its underpart and carries out fragmentation second time, so just solved because of thin material enters the broken for the second time cushion that forms, caused that crushing effect descends and the problem of waste energy consumption.

For making material can produce high speed centrifugation power, in two rotors, be equipped with a plurality of spreading passages, the shape of spreading passage is quickened to fly away from rotor and is designed by helping material, according to rotor speed and quality of material, and finished product granularity requirements, the spreading channel design has difformity and varying number, the concrete structure of spreading passage is made up of rotor base plate and a plurality of dividing plates on it, the downward projection line of its dividing plate is involute or tangent line shape, help material like this and quicken to fly away from rotor, guarantee that material is with ceiling capacity, maximum speed, minimum friction is dished out at a high speed in rotor.For making the material crushing effect that ion is dished out in the rotor remarkable, on the sidewall of crushing chamber, counterpunch board is housed, the surface of this counterpunch board is dentalation, can be with the material impact grinding, material is moved in a certain direction, this counterpunch board is made with high-abrasive material, can select tungsten carbide or high-chromium material for use.Be connected to deflection plate on counterpunch board top, above the rotor in last crushing chamber stock guide is arranged, carry out fragmentation by centrifugal material of dishing out and counterpunch board in the rotor like this, material after its fragmentation bumps with deflection plate, deflector again, then mutual impact, collision, the grinding between material and shock plate and material and the material reaches the crushing effect of design, and the wearing and tearing of rotor are relieved to minimum level.Material after the impact is reasonably strikeed back the diverse location of fracture area by the quality size, has improved the impact chance between material and the material again, improves crushing effect.Material after the last crushing chamber fragmentation at first enters the sieve plate district, discharge channel outside under sieve plate, having, interior discharge channel is arranged at the rotor bottom in following crushing chamber, within it, aggregate bin is arranged at outer discharge channel bottom, in disintegrating machine, can realize the shunting of thin material like this, thick material is entered down carry out the fragmentation second time in the crushing chamber, thereby crushing effect is significantly improved.

Compared with the prior art the present invention has following advantage:

1, owing in the body upper and lower two crushing chambers and inner sieving mechanism are arranged, but two-stage fragmentation, interior screening thickness material diversion promptly improved crushing effect, cut down the consumption of energy, can once reach the finished product requirement again.

2, simple in structure, the output investment ratio like product reduces by 80%,

3, particle size after cracking forms powdery and reaches 30% below 5 millimeters, and its crushing effect is remarkable.

4, because particle size after cracking quality height enters ball mill and has tangible Increasing Production and Energy Saving effect, be example with the clinker, ball mill output is improved more than 50%, power consumption descends more than 30%.

Be further described below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of this disintegrating machine;

Fig. 2 is the schematic top plan view of rotor 1a;

Fig. 3 is the schematic top plan view of rotor 1b;

Fig. 4 is a screening plant plan structure schematic diagram;

Referring to accompanying drawing: be provided with upper and lower crushing chamber 7,12 in body 8, between two crushing chambers screening plant be housed, this screening plant is made up of sieve plate 9 and blind plate 11, and its structure is that annular shape is fallen frustum-like shape, and cone angle is 40 °～65 °.Two rotor 1a, 1b are connected by same vertical shaft 2, are provided with 4 spreading passages 16 in the rotor 1a, and its passage is made up of rotor base plate 17 and dividing plate 18, and the downward projection line of its dividing plate 18 is an involute.Be provided with 8 spreading passages 19 in the rotor 1b, the downward projection line of its dividing plate 20 is a tangent line.On crushing chamber 7,12 sidewalls, counterpunch board 5a, 5b are housed, the surface of this counterpunch board is dentalation, the fragmentation of favourable thing material, for preventing that material from sputtering fracture area in impact and collision process, be connected to deflection plate 6,6b on the top of counterpunch board 5a, 5b, above the rotor 1a in last crushing chamber 7 stock guide 4 be housed also.Central upper at rotor 1a is equipped with material distributing cone 3, is used to make material evenly to enter in the spreading passage 16.Central upper at rotor 1b is equipped with limit material awl 15, adjusts the upper and lower displacement of limit material awl 15, can control the flow that enters material in the rotor 1b, in order to improve its crushing effect.

During actual the use, need in the broken spreading passage 16 of material in material distributing cone 3 enters rotor 1a equably, rotate generation centrifugal force by rotor high-speed, with the material throwing to counterpunch board 5a, make material under impact and collision effect, be able to fragmentation, through the material landing after the fragmentation first time or splash on the sieve plate 9, this sieve plate 9 is to be made by round bar coiling welding.Material is under the effect of inertia and shaking force, to lower slider and be sized, the thin material that meets granularity requirements passes sieve plate 9, outer discharge channel 10 through its underpart enters aggregate bin 13, discharge outside the machine then, the thick material that tails over by the sieve plate district after, fall into from blind plate 11 middle parts in the spreading passage 19 of rotor 1b.The limit material awl 15 on rotor 1b top, material is entered in the rotor 1b on request, rotor 1b is in the mode same with rotor 1a, with the centrifugal high speed throwing of material to counterpunch board 5b, make material broken once more through tailing over, entered aggregate bin 13 by broken for the second time material through interior discharge channel 14, discharge outside the machine in the lump with the material that outer discharge channel 10 draws off.

Claims (6)

1, a kind of inner screening centrifugal breaker has rotor etc., it is characterized in that, is provided with upper and lower two crushing chambers in body, and a rotor is respectively arranged in two crushing chambers, and two rotors are connected by same vertical shaft, are provided with screening plant between two crushing chambers.

2, disintegrating machine as claimed in claim 1 is characterized in that, a plurality of spreading passages are arranged in the rotor, and this spreading passage is made up of rotor base plate and a plurality of dividing plates on it, and the downward projection line of its dividing plate is involute or tangent line.

3, disintegrating machine as claimed in claim 1 is characterized in that, its structure of screening plant is frustum-like shape of annular, and cone angle is 40 °～65 °, is made up of sieve plate and blind plate.

4, disintegrating machine as claimed in claim 1 is characterized in that, on the crushing chamber sidewall counterpunch board is housed, and the surface of this counterpunch board is dentalation, is connected to the baffling machine on counterpunch board top.

5, disintegrating machine as claimed in claim 1 is characterized in that, there is stock guide the rotor top in the last crushing chamber.

6, disintegrating machine as claimed in claim 3 is characterized in that, outer discharge channel is arranged under the sieve plate, and interior discharge channel is arranged at the rotor bottom in the following crushing chamber, and there is aggregate bin its underpart.

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