CN2527343Y

CN2527343Y - Birotor superfine hammer type reaction crusher having internal grading device

Info

Publication number: CN2527343Y
Application number: CN 01267025
Authority: CN
Inventors: 李征宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-04
Filing date: 2001-11-04
Publication date: 2002-12-25
Anticipated expiration: 2011-11-04

Abstract

The utility model relates to mechanical equipment for crushing, grinding and grading. The utility model is characterized in that the inside of the mechanical equipment is provided with a crushing and grinding device, a grading device, a feed dividing device and a wind sweeping device. The operations of continuously crushing, grinding and grading materials can be realized. The utility model has the advantages that the utility model is provided with a crushing and grinding integrated structure. The traditional crushing process, grinding process and grading process accomplished in one device can be realized. Therefore, production links and system devices can be simplified, and the manufacturing cost is reduced. Because the materials are further processed by a special mechanical structure, the crushing and grinding efficiency and the production capacity can be increased greatly. The energy consumption is reduced. The ultra-fine product of large granularity ratio (up to 950) can be produced.

Description

Establish the broken grinding machine of the ultra-fine counterattack hammer of birotor of grading plant in a kind of

The utility model relates to the broken grinding machine of counterattack hammer that a kind of fragmentation, grinding that is applied to the nonmetallic ore deep processing held concurrently classification.Its special feature is to be provided with in the machine eddy current type grading plant, two-chamber (coarse crushing chamber and fine grinding chamber), two-spool fragmentation hold concurrently the separate space feeding-distribution device of grinding device and separable thickness material and the wind sweeping device of the fine powder behind the grinding being sent into grading plant.

The counter beating hammer type disintegrator type can be divided into according to the rotating speed of rotor fast and counter beating hammer type disintegrator at a slow speed, also can be according to the particle size after cracking score of material coarse crushing, in counter beating hammer type disintegrator broken and in small, broken bits, also can be divided into single chamber single rotor and two-chamber birotor counter beating hammer type disintegrator according to the structural shape of disintegrating machine.The utility model be belong to fast, in combination in small, broken bits, two-chamber birotor counter beating hammer type disintegrator type.

Usually use more counter beating hammer type disintegrator in small, broken bits require rotor have higher speed of gyration (40～70m/s), drive the tup (bar) that hangs on the rotor.The kinetic energy that the tup that runs up (bar) is had imposes strike to material in working chamber, simultaneously through the bump friction of material and crushing shell, between the material mutual collision impact and reach the purpose of pulverizing.Because material directly enters high speed rotor rotated tup workspace and is subjected to the strike of tup (bar), thus require the feed size of material can not be too big, so the ratio of reduction of this type disintegrating machine is little.The name of China's utility model patent communique bulletin is called the utility model patent (patent No.: ZL 97230939.X of " the broken grinding machine of vertical multi-stage counterattack ", notification number: CN2311304Y), according to this utility application specification introduction, the broken grinding machine of vertical multi-stage counterattack is the vane type impact block that is provided with two row's rotations in the crusher chamber of erectting, and liner plate and the grate plate that is concave shape is installed around the vane type impact block.Raw material enters brokenly after the grinding machine, under the strike of impact block, progressively fall by grate plate to next stage vane type impact block workspace, the thick material that enters the next stage workspace by grate plate will not continue to be hit broken mill by impact block, until can be by till the grate plate.The control product granularity mainly is the comb seam that relies on grate plate, thereby has strengthened the dynamics that impact block hits material, has constituted working mechanism broken and that grind.Though this utility model patent has the advantage of broken break-in one, are no lack of some defectives of existence.At first, the structure of the broken grinding machine of vertical multi-stage counterattack exists obvious defects and deficiency.Because it is a kind of broken grinding machine (ratio of reduction reaches more than 450) of production and processing fine granular materials, its raw material that should be able to satisfy suitable coarsegrain enters the impact block workspace so, but the broken grinding machine of vertical multi-stage counterattack has adopted vertical shaft type to horizontally rotate the mode of vertical fragmentation, has exactly limited bulk materials and has entered the impact block workspace.Owing to adopted the structure of vane type impact block to horizontally rotate, the impact block sidepiece is and connects top-down bulk materials, certainly will be subjected to uneven external force, causes the vibration of vane type impact block and main shaft, will limit the feeding granularity thus.Secondly, if take into account the feeding large granular materials, that just must reduce the rotating speed of vane type impact block, so just might hit material with the position of the best, improves broken mill effect.Yet reduced the rotating speed of vane type impact block, can have influence on next stage vane type impact block again fine grain broken mill effect.In fact, this is a contradiction on disintegrating machine is used, and promptly adopts identical impact velocity or impact kinetic energy, in a machine material is carried out coarse crushing and fine crushing is impossible.Once more, because the multistage broken mill of the broken grinding machine of vertical multi-stage counterattack, each stage material granularity is to control by the comb seam width of grate plate, and the material that meets granularity requirements is by grate plate, and the coarse granule material that does not meet granularity requirements carries out coarse crushing in the above by the grate plate retaining.Can not control raw meal particle size well in the practical application.Because the phenomenon of the broken mill of this thickness intersection exists in shattering process, fine granular materials can not cause the fine grained accumulation to influence the crushing efficiency of coarse granule material in time by the comb seam of grate plate.Because the comb seam width of control grate plate that can not be strict, breaking in the material practice that grinds is the mixed material that thickness has concurrently.The version of this fan-shaped comb seam is worthless.

Normally used birotor counter beating hammer type disintegrator belong to a kind of in broken disintegrating apparatus, its design feature is that rotor that two switched in opposite are installed in crusher chamber drives tup (bar) and hits material from falling between two rotors.Raw material is to enter the broken workspace of tup by the top between two rotors, behind the collision impact of tup by wrap up in respectively take to two rotors below grate plate grind the workspace.The comb of the material that reaches designated size by grate plate sews extrudes the workspace.In recent years, a kind of impact breaker that does not have the below grate plate occurred, it is said and to improve crushing efficiency.The name of China's utility model patent communique bulletin is called the utility model patent (patent No.: the ZL 96246237.3 of " twin shaft do not have carry off the wall hammer mill ", notification number: CN2265244Y), according to this utility application specification introduction, twin shaft does not have that to carry off the wall hammer mill be a disintegrating apparatus that the bulk materials primary fragmentation is become piece material.It is characterized in that being set up in parallel two rotors that hang several tups, two rotor direction of rotation are opposite, and speed of gyration equates.Raw material is knocked down by two rotor tops and is subjected to fiercely knocking of two different directions hammer groups simultaneously, and so the material after the strike is discharged by discharge gate, immediately the production efficiency height under the situation without any resistance.Broken disintegrating machine type during this utility model patent belongs to.Though it has adopted the broken Cracking Mechanism of the incorgruous rotation of birotor, exists irremediable defective.At first, its design feature has determined its granularity of uncontrollable product in the running.Raw material enters birotor tup fracture area by the top of disintegrating machine with the decrease speed of freely falling body, some material repeatedly is subjected to the collision impact of tup, the chance that some material catches a packet is few, the material that has may not run into tup just from the discharge gate discharge at all, causes the granularity thickness inequality of finished product materials.Secondly, for intermediate crusher, material is long more in the time of staying of broken workspace, and the fragmentation of material is counted many more, and pulverized chance is also just big more.Could improve crush efficiency like this.In addition, twin shaft does not have two rotating shafts of carrying off the wall hammer mill and has adopted identical rotating speed, and two tup groups do not have differential phenomenon in broken workspace like this, have reduced crushing effect, has increased the possibility of leaking the material phenomenon greatly.

The purpose of this utility model provides the hold concurrently plant equipment of classification of a kind of fragmentation, grinding.Being in series with three working chambers in machine, is respectively crusher chamber, grinding chamber and classification chamber.In three chambeies, be respectively equipped with revolvable broken rotor, grind rotor and classification rotor.Raw material at first enters crusher chamber and carries out coarse crushing, then entering the grinding chamber further pulverizes, fine powder is with people's classification chamber to carry out classification by the wind sweeping device and is handled, qualified product is sent outside the machine by the graded blade of grading wheel, and underproof meal is pulverized in the returning charge deflector turns back to the grinding chamber again.The ore super-fine processing equipment of this broken mill classification unification, be characterized in rational in infrastructure, safe and reliable to operation, energy-saving and cost-reducing, broken mill efficient height, grading precision height, the fineness ratio of material (ratio of reduction) big (can up to 950), production capacity is big, and operation link and system process are simple, the automatic controlling level height.

Advantage of the present utility model is to have adopted the incorporate structure of broken mill classification, makes thick, the fining-off of non-metallic material and grinding process to finish in a machine and becomes a reality.For this reason, can increase substantially production efficiency, reduce production cost, simplify production link and reduce system equipment.Since with its reasonable and special frame for movement to material carry out slightly, fining-off and classification processing, can realize the ore time processing that three limits are of a size of 150 * 150 * 200 mm particle sizes is become the superfine product of 44～100 micron granularities, also can produce other qualified product according to user's specific (special) requirements.

Below in conjunction with the description of the drawings, provide the utility model embodiment:

Accompanying drawing is a structural representation of the present utility model.

1, drawing-in device

2, guide blind plate

3, counterattack tooth plate

4, broken rotor

5, broken tup

6, broken tooth plate

7, crushing and grinding machine shell

8, hammer axle

9, broken cavity

10, rotor main shaft

11, tooth plate bearing support

12, feeding-distribution device

13, separate space plate

14, grinding tup

15, grinding rotor

16, grinding cavity

17, broken roll flute plate

18, aerofoil

19, returning charge deflector

20, graded chamber

21, fine powder discharging opening

22, grading wheel blade

23, grading wheel rotor

24, striker plate

The utility model plant equipment is made up of drawing-in device 1, broken cavity 9, grinding cavity 16, graded chamber 20 and feeding-distribution device.Broken cavity 9 and grinding cavity 16 symmetries are positioned at the both sides of crushing and grinding machine shell 7, and graded chamber 20 is positioned at the top of grinding cavity 16, and drawing-in device 1 is positioned at the top of broken cavity 9.Mainly constitute in the broken cavity 9 by broken rotor 4, broken tup 5, guide blind plate 2, counterattack tooth plate 3, broken tooth plate 6, hammer axle 8, rotor main shaft 10 and striker plate 24.Broken rotor 4 is positioned at the center of broken cavity 9, rotates under the driving of power rotor main shaft 10, drives staggered several broken tups 5 that are suspended on the hammer axle 8 and does corresponding rotation.Broken tup 5 can be done 360 ° of rotations around hammer axle 8.Sidepiece at broken rotor 4 is provided with a guide blind plate 2 and two counterattack tooth plates 3.150 ° of scopes of lower periphery direction at broken rotor 4 are equipped with five broken tooth plates 6, and the distance of the tooth top of tooth plate and tup extension can strict be controlled.The gyratory directions of broken rotor 4 is clockwise direction (from the accompanying drawing position).Mainly constitute in the grinding cavity 16 by grinding rotor 15, grinding tup 14, broken roll flute plate 17, hammer axle 8, rotor main shaft 10.Grinding rotor 15 is positioned at the center of grinding cavity 16, rotates under the driving of power rotor main shaft 10, drives staggered several grinding tups 14 that are suspended on the hammer axle 8 and does corresponding rotation.Grinding tup 14 can be done 360 ° of rotations around hammer axle 8.Sidepiece at grinding rotor 15 is provided with a negative pressure inlet aerofoil 18, and air enters in the grinding cavity 16 by aerofoil 18 rectifications, and the fine powder behind the grinding is brought in the graded chamber 20.210 ° of scopes of lower periphery direction at grinding rotor 15 are equipped with seven blocks of broken roll flute plates 17, and the distance of the tooth top of tooth plate and tup extension can strict be controlled.The gyratory directions of grinding rotor 15 is clockwise direction (from the accompanying drawing position).Mainly constitute in the graded chamber 20 by the horizontal grading wheel rotor 23, grading wheel blade 22, fine powder discharging opening 21 and the returning charge deflector 19 that rotate at a high speed.A plurality of grading wheel blades 22 are evenly distributed on the circumference of grading wheel rotor 23 extensions, the rotating speed of grading wheel rotor 23 can arbitrarily be adjusted, can require to regulate according to different product granularities, the quantity of grading wheel blade 22 can arbitrarily be added and subtracted according to the output and the granularity requirements of product.Returning charge deflector 19 is positioned at the below of grading wheel rotor 23, its surface can adjust arbitrarily with the angle of horizontal direction to obtain best returning charge effect.A feeding-distribution device 12 and separate space plate 13 are installed between broken cavity 9 and grinding cavity 16, and the function of feeding-distribution device 12 is to stop not broken fully large granular materials to enter in the grinding cavity 16, and separate space plate 13 can be separated the broken grinder of thickness material and make environment.In crushing and grinding machine shell 7, be provided with an adjustable tooth plate bearing support 11, be positioned at the below of feeding-distribution device 12.Utilize the up-down adjustment of tooth plate bearing support 11, adjust the distance between broken tooth plate 6, broken roll flute plate 17 and broken tup 5 and the grinding tup 14 respectively.

Constituted the architectural feature of the broken grinding machine of the ultra-fine counterattack hammer of birotor of broken mill classification unification by above drawing-in device, breaker, grinding device and grading plant.

The operation principle of the broken grinding machine of the ultra-fine counterattack hammer of birotor is as follows:

The broken mill classification process of the broken grinding machine of the ultra-fine counterattack hammer of birotor is actually branchs three and goes on foot and carry out i.e. coarse crushing process, crushing process and classification process.

The coarse crushing process and traditional in broken disintegrating machine mechanism similarity is arranged.Bulk raw is at first fallen on the guide blind plate 2 by drawing-in device 1, or directly enter on broken tup 5 working faces of rotation, being subjected to turning spur speed is the strike of the broken tup 5 of 35m/s, make the impact kinetic energy of tup change the work of deformation of material rapidly into, produce very big stress and concentrate and cause the material fragmentation.Because the quality that enters the bulk materials of broken workspace far surpasses the quality of tup, broken tup 5 can be kept out of the way in the broken rotor 4 after the strike when if to fail a material blow be broken, and the material that does not smash is accepted the strike of back one row's tup, with this repeatedly.The material that is crashed to pieces is thrown to counterattack tooth plate 3 with a very big momentum and is further clashed into, and increases the efficient of coarse crushing.Because the material running orbit after 3 bounce-backs of counterattack tooth plate is a change at random, increases the chance that material runs foul of each other again, has strengthened the possibility of autoclase between material and the material.When broken tup 5 wrap up in be with material to enter broken tooth plate 6 workspaces after, material runs into the extrusion shearing effect of flute profile crushing shell, the particle diameter of material further dwindles.Striker plate 24 on broken rotor 4 tops can stop that not broken bulk materials directly enters feeding-distribution device 12 places.Small particles material after the broken cavity 7 inner process fragmentations under action of centrifugal force, enters in the grinding cavity 16 by feeding-distribution device 12 rapidly.

Process in small, broken bits is actually the mechanism that grinds that adopts at a high speed broken grinding machine.When fine granular materials entered in the grinding cavity 16 by feeding-distribution device 12, the strong power that is subjected to turning spur speed at once and is 50～70m/s grinding tup 14 hit and breaks roll flute plate 17 and wash away grinding.Because broken roll flute plate 17 is distributed in 210 ° of scopes of grinding rotor 15 peripheries, the grinding workspace is long, and broken mill point is more, and the time ratio that thin material stops in the grinding district is more of a specified duration, so mill efficiency is very high.The powder material of pulverizing is forced to bring in the classification cavity shell by negative-pressure air-flow near aerofoil, carries out classification and handles.

In fact classification process has adopted the eddy current type classification principle.Fine powder is brought in the horizontal grading wheel rotor 23 with ascending air.According to the eddy current type classification principle, enter and rotate the micro powder granule between the grading wheel blade 22 at a high speed owing to be subjected to the effect of centrifugal force field and resistance of medium, when two active forces equate, produce classification meta particle diameter, the less relatively fine granular materials of quality this moment overcomes action of centrifugal force, and is sent outside the machine through fine powder discharging opening 21 in the air-flow carry over score level impeller blade 22.The relatively large coarse granule of quality overcomes resistance of medium and is taken out of grading wheel blade 22 by centrifugal force, under the effect of returning charge deflector 19, turns back to again and carries out grinding again in the grinding cavity.

Claims

1, establishes the broken grinding machine of the ultra-fine counterattack hammer of birotor of grading plant in a kind of and form, it is characterized in that broken cavity (9) and grinding cavity (16) symmetry are positioned at the both sides of crushing and grinding machine shell (7) by drawing-in device (1), broken cavity (9), grinding cavity (16), graded chamber (20) and feeding-distribution device (12); Graded chamber (20) is positioned at the top of grinding cavity (16); Drawing-in device (1) is positioned at the top of broken cavity (9).

2, the ultra-fine counterattack hammer of birotor according to claim 1 breaks grinding machine, it is characterized in that broken cavity (9) is by broken rotor (4), broken tup (5), guide blind plate (2), counterattack tooth plate (3), broken tooth plate (6), hammer axle (8), rotor main shaft (10) and striker plate (24) constitute, broken rotor (4) is rotation at a high speed under the driving of power rotor main shaft (10), driving the staggered hammer axle (8) that is suspended on goes up several broken tups (5) and does corresponding rotation, sidepiece and lower circumference direction at broken rotor (4), be provided with guide blind plate (2), counterattack tooth plate (3) and broken tooth plate (6) are equipped with striker plate (24) on broken rotor (4) top.

3, the broken grinding machine of the ultra-fine counterattack hammer of birotor according to claim 1, it is characterized in that grinding cavity (16) is made of grinding rotor (15), grinding tup (14), broken roll flute plate (17), hammer axle (8), rotor main shaft (10), grinding rotor (15) is rotation at a high speed under the driving of power rotor main shaft (10), driving the staggered hammer axle (8) that is suspended on goes up several grinding tups (14) and does corresponding rotation, in the sidepiece and the lower circumference direction of grinding rotor (15), be provided with brokenly roll flute plate (17) and aerofoil (18).

4, the broken grinding machine of the ultra-fine counterattack hammer of birotor according to claim 3 is characterized in that on equally distributed each the hammer axle (8) of broken rotor (4) staggered several broken tups (5) that hanging on every side; On equally distributed on every side each the hammer axle (8) of grinding rotor (15), staggered several grinding tups (14) that hanging; All tups all can be done 360 ° of rotations around hammer axle (8).

5, the broken grinding machine of the ultra-fine counterattack hammer of birotor according to claim 1, it is characterized in that graded chamber (20) is made of horizontal grading wheel rotor (23), grading wheel blade (22), fine powder discharging opening (21) and the returning charge deflector (19) of rotation at a high speed, a plurality of grading wheel blades (22) are evenly distributed on the circumference of grading wheel rotor (23) extension, returning charge deflector (19) is positioned at the below of grading wheel rotor (23), and the surface of returning charge deflector (19) can be adjusted the angle with horizontal direction arbitrarily.

6, the broken grinding machine of the ultra-fine counterattack hammer of birotor according to claim 1, it is characterized in that between broken cavity (9) and grinding cavity (16), being equipped with a feeding-distribution device (12) and separate space plate (13), the function of feeding-distribution device (12) is to stop not broken fully large granular materials to enter in the grinding cavity (16), and separate space plate (13) can be separated the broken grinder of thickness material and make environment.

7, the broken grinding machine of the ultra-fine counterattack hammer of birotor according to claim 1, it is characterized in that in crushing and grinding machine shell (7), being provided with an adjustable tooth plate bearing support (11), be positioned at the below of feeding-distribution device (12), utilize the up-down adjustment of tooth plate bearing support (11), adjust the distance between broken tooth plate (6), broken roll flute plate (17) and broken tup (5) and the grinding tup (14) respectively.

8, according to claim 3 or the broken grinding machine of the ultra-fine counterattack hammer of 5 described birotors, it is characterized in that the sidepiece between grinding rotor (15) and graded chamber (20) is provided with a negative pressure inlet aerofoil (18), air enters in the grinding cavity (16) by aerofoil (18) rectification, and the fine powder behind the grinding is brought in the graded chamber (20).