CN2579522Y

CN2579522Y - High speed wortex super fine crahsing self mill

Info

Publication number: CN2579522Y
Application number: CN 02252628
Authority: CN
Inventors: 江永镜; 宋海兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-04
Filing date: 2002-09-04
Publication date: 2003-10-15
Anticipated expiration: 2012-09-04

Abstract

The utility model discloses a high-speed vortex superfine crushing autogenous mill. The utility model adopts discharging protection and deslagging structure, a phenomenon that powder is deposited on the bottom of a crushing cavity can be effectively prevented, and adverse effects caused by vicious circles are eliminated. Meanwhile, a dust-proof cap with small blades is adopted, and powder dust can be effectively prevented from entering a bearing; therefore, the bearing is protected, and the service life of equipment is extended. Superhard substances which are contained in material can be exhausted out of a machine body in time, the stable operation of the equipment is ensured, and product purity is enhanced. A unique constraining ring device is adopted, the influence of splashing material for the vortex flow of a grading room under high-speed impact can be effectively prevented, the equalization of normal grading force fields of the grading room is protected, and grading efficiency and stability are enhanced. A sealing device for a mechanical metal wheel is matched with labyrinth seal on a grading wheel, the phenomenon of coarse size of large granules is stopped, coarse granules are further prevented from entering through an outlet of the end surface of the grading wheel to pollute finished products, and the grading precision of products is enhanced.

Description

A kind of high-speed rotational ultra-fine grinding autogenous tumbling mill

Technical field

The utility model relates to a kind of reducing mechanism, and is particularly relevant with air-flow pulverizing, high speed impact pulverizing and cyclonic current pulverizer.

Background technology

Tradition high speed impact pulverizer, the cyclonic current pulverizer all exists such or such problem.Though under scientific research technical staff's research of technique, developed many types.As CN2122687U, CN2181993Y, CN2236892Y, CN2290402Y, CN2389004Y, though the disclosed novel grinding machine of patents such as CN2397999Y is progressive very big, but in concrete production, still deposit many problems: in 1. incorporate pulverizing and the grading plant, crushing chamber communicates with grading room, and is without hindrance every restraint device, cause coarse granule to be splashed into grading room with inertia, upset the field of force in the grading room, between grading room and grading wheel, cause vortes interference, outside grading wheel, be easy to generate " fish hook " effect, reduce classification efficiency, increased the classification resistance.2. adapted tradition grading wheel, stability and intensity are limited, have limited the grading wheel diameter, and graded blade is few and thick simultaneously, and the gap is big; Add that grading wheel material outlet end face fit clearance is big, quite a few powder directly enters the product from this gap " short circuit ", cause product fineness " to run thick ", and it is unstable, though some grader adopts mechanical labyrinth seal, stoped the coarse granule of considerable part to enter product, still have the part powder granule to pass labyrinth clearance and enter in the product in the radially entrainment force of negative pressure, cause Granularity Distribution " to hold back ", influence product quality.

The utility model content

The purpose of this utility model provides to be pulverized and classification a kind of the collection, and the automaticity height can become the following granularity of 10～2 μ m with piece material or crushing and classification of granular material; Can eliminate effectively that powder is leaked in crushing chamber bottom, the collection powder prevents that the bearing block assembly from entering dust; Can keep away iron effectively, increase product whiteness, improve the product glossiness; Can effectively control the generation that the branch stage material " runs slightly " phenomenon; Can pulverize not third constellations hardness middle hard material below 7, and the high-speed rotational ultra-fine grinding autogenous tumbling mill that does not pollute with irony.

The technical solution of the utility model is: a kind of high-speed rotational ultra-fine grinding autogenous tumbling mill, comprise: base, main motor, axle bed, the crushing chamber cylindrical shell, main shaft, the high-speed abrasion-proof rotating disk, the high hardness wear-resisting lining ring, high rigidity is pulverized plate, feed pipe, loop back airduct, the constraint circle, the unloading scum pipe, middle cylinder body, grading wheel, the high-efficiency low-resistance cyclone device, it is characterized in that: base is a box style substructure, bearing block and main motor are housed on bedplate, in base member case, by driving-belt the transmission that is connected with the main motor drive of spindle drive wheel, it is simplified that crushing chamber is housed on axle bed, in the simplified bottom of crushing chamber, main shaft upper end on the axle bed is equipped with a conical wear-resisting rotating disk, the conical surface is equipped with 4 above high rigidity and pulverizes plate on wear-resisting rotating disk, 24 above strong wind blades are installed on the conical surface under the high-speed abrasion-proof rotating disk, be close to high-speed abrasion-proof rotating disk place at crushing chamber the wear-resisting lining ring of one high rigidity annular is installed, become matched in clearance with the high-speed abrasion-proof rotating disk, one dustproof blast pipe and unloading scum pipe are installed in the crushing chamber bottom, one little fan blade dust cap is installed under the high speed rotating plate lower surface, in the crushing chamber upper surface one middle cylinder body is installed, have charging aperture on the middle cylinder body, and be connected with feed pipe, with loop back airduct and communicate, face the positive center of high-speed abrasion-proof rotating disk and loop back the airduct bottom, looping back airduct top then is connected with the high pressure blast pipe, the other end of high pressure blast pipe stretches out outside the cylindrical shell from middle cylinder body top, link to each other with high pressure positive blower or Roots blower, the constraint circle is installed in the middle cylinder body bottom, in simplified upper end the grading room cylindrical shell is installed, the grading room cylindrical shell is equipped with grading wheel and grading wheel top chock and grading wheel step, grading room cylindrical shell top is equipped with powder collection cavity and collection tube cell, link to each other with the high-efficiency low-resistance cyclone dust-precipitator outside collection tube cell pass-out powder collection cavity is simplified, frequency modulation motor is housed outside the simplified upper end in the classification chamber takes turns the transmission that links to each other with the grading wheel spindle drive by driving-belt.Further, grading wheel is by the grading wheel main shaft, grading wheel spindle drive wheel, the grading wheel top chock, the grading wheel step, labyrinth on the grading wheel, labyrinth in the grading wheel, labyrinth under the grading wheel, the location axle sleeve, lower hub, last wheel hub, machinery metal wheel sealing device, machinery metal wheel lower seal, at grading wheel parallel uniform at least 100 above graded blades of inlaying of hub outer rim direction up and down, wheel hub and graded blade become the minim gap cooperation on mechanical metal wheel sealing device and the grading wheel, mechanical metal wheel lower seal is installed in mechanical metal wheel sealing device bottom simultaneously, extends the above length of 10mm downwards along grading wheel blade outer rim.

The utlity model has remarkable advantage:

1, facility compact is simple, and floor space is little, integrates to pulverize and classification, piece material or crushing and classification of granular material can be become the superfine powder of the following granularity of 10～2 μ m.Pulverize thoroughly fully, output is big, and energy consumption is low, and control is easy, the automaticity height, and the production and processing cost is low.

2, adopt novel unloading protecting and dreg removing system, can effectively prevent crushing chamber bottom collection powder phenomenon, eliminate the harmful effect that vicious circle thus brings; Adopt little fan blade dust cap simultaneously, can prevent effectively that dust from entering in the bearing, thereby the protection bearing prolongs equipment service life; The superhard material that is mingled with in the material can be discharged outside the body immediately, guarantee equipment stable operation, improve product purity.

3, adopt unique constraint coil apparatus, institute prevents that effectively the material that splashes under the high speed impact from impacting the normal classification of protection grading room field of force equilibrium, raising classification efficiency and stability to the eddy current of grading room.

4, on grading wheel, adopt mechanical metal wheel sealing device to match with labyrinth seal, stopped the phenomenon of oarse-grained " running thick ".Mechanical metal wheel lower seal is extended more than the 10mm downwards along the graded blade outer rim simultaneously, intercept powder and desired to enter rotor and the route that exports dynamic clearance, and increased auxiliary action of centrifugal force, prevent that further coarse granule from sneaking into from the grading wheel end face outlet, pollute finished product, improved the grading precision.

5, by in rotoclone collector, installing the resistance rod-like device that disappears additional, effectively reduce windage in the rotoclone collector, improve dust-collecting efficiency.Adopt many minor diameter conelet degree rotoclone collectors and sack cleaner supporting simultaneously, improved the ability of gathering dust that high order is counted powder greatly.

The utility model can be widely used in industries such as mineral products, building materials, chemical industry, light industry, food, medicine, cosmetics.Can pulverize not third constellations hardness below 7, non-inflammable and explosive material; As nonmetallic ores such as konilite, wollastonite, barite, lime stone, marble, calcite, talcum, kaolin; And the pottery glaze, as metal oxides such as aluminium oxide, iron oxide, manganese oxide, magnesia; Also has medicine and food such as Chinese medicine, pollen, wheat, rice, corn, coffee; And certain viscous material is arranged, and as titanium dioxide, materials such as precipitated calcium carbonate, bentonite, soap powder, washing powder.

Description of drawings

Fig. 1 is the utility model structural representation.

The specific embodiment

Shown in Fig. 1: 1, base 2, spindle drive wheel 3, main motor drive 4, main frame driving-belt 5, main motor 6, axle bed 7, little fan blade dust cap 8, high-speed abrasion-proof rotating disk 9, main shaft 10, strong wind blade 11, high rigidity is pulverized plate 12, high hardness wear-resisting lining ring 13, crushing chamber simplified 14, middle cylinder body 15, constraint circle 16, feed pipe 17, loop back airduct 18, high pressure blast pipe 19, grading wheel 20, grading room simplified 21, step 22, following labyrinth 23, location axle sleeve 24, lower hub 25, graded blade 26, last wheel hub 27, machinery metal wheel sealing device 28, machinery metal wheel lower seal 29, last labyrinth 30, top chock 31, collection tube cell 32, grader main shaft 33, grader spindle drive wheel 34, grader driving-belt 35, frequency modulation motor 36, frequency modulation motor drive 37, dustproof blast pipe 38, unloading scum pipe 39, little lining ring 40, middle labyrinth 41, powder collection cavity.

The utility model main motor 5 and axle bed 6 usefulness bolts are fastened on the base 1, main motor 5 connects spindle drive wheel 2 and main motor drive 3 transmissions by main frame driving-belt 4, drive pulverizer main shaft 9 and high-speed abrasion-proof rotating disk 8 and high rigidity and pulverize plate 11 and strong wind blade 10, high speed rotating, rotating speed＞1800～2600 rev/min, be connected with crushing chamber cylindrical shell 13 on the axle bed 6, crushing chamber cylindrical shell 13 lower ends are provided with dustproof blast pipe 37, unloading scum pipe 38, crushing chamber cylindrical shell 13 epimeres are located with little lining ring 39, and use bolt positioning and locking high hardness wear-resisting lining ring 12 simultaneously, with 8 one-tenth matched in clearance of high-speed abrasion-proof rotating disk, little fan blade dust cap 7 is installed under high-speed abrasion-proof rotating disk 8 lower surfaces, be connected with middle cylinder body 14 on the crushing chamber cylindrical shell 13, middle cylinder body 14 upper ends have charging aperture, and feed pipe 16 is installed and loops back airduct 17 and communicate, loop back airduct 17 be installed in simplified 14 inner chamber centre, lower port is over against the center of high-speed abrasion-proof rotating disk 8, loop back airduct 17 tops and be communicated with high pressure blast pipe 18, high pressure blast pipe 18 stretches out the middle cylinder body 14 outer blower fans that connect.Middle cylinder body 14 bottoms are equipped with a constraint circle 15, middle cylinder body 14 upper surfaces are connected with grading room cylindrical shell 20, fix a step 21 in grading room cylindrical shell 20 bottoms, simplified 20 tops of grading room are fixed with a top chock 30, and a vertical grader main shaft 32 is installed between the metal (upper seat.This main shaft 32 is upward through powder collection cavity 41, grader main shaft upper end is equipped with the grader main shaft and passes runner 33, by grader driving-belt 34 transmission that links to each other with the drive 36 of frequency modulation motor 35, the last wheel hub 26 of grading wheel 19 and the corresponding one by one rectangular slot that has of lower hub 24, and in corresponding open slot, inlay 100 above graded blades 25, and location axle sleeve 23 is passed through in labyrinth 22 down, be close on grading wheel 19 steps 21, labyrinth 40 on grading wheel, being equipped with on the wheel hub 26, in powder collection cavity 41 bottoms, middle labyrinth and last wheel hub 26 outer rim places along grading wheel 19, one mechanical metal wheel sealing device 27 is installed, with last labyrinth 29 and last wheel hub 26 and 25 one-tenth matched in clearance of graded blade, one mechanical metal wheel lower seal 28 is installed in mechanical metal wheel sealing device 27 bottoms simultaneously is close to 25 one-tenth minim gaps cooperations of graded blade, grading wheel 19 is made level and is rotated at a high speed under frequency modulation motor 35 drives, it is implemented in stepless speed regulation in 0～6000 rev/min the scope by frequency modulator.

Principle of the present utility model is: lump material is crushed to below the 20mm through jaw crusher, fall in the crushing chamber simplified 13 from feed pipe 16, the high speed that is subjected to the high rigidity pulverizing plate 11 of high speed rotating disc 8 drives clashes, and is splashed to inertia then and is subjected to clashing into for the second time the moment pulverizing on high hardness wear-resisting lining ring 12 inwalls.Material after the pulverizing rebounds and makes centrifugal motion up and down to the high-speed rotational center that the wear-resisting rotating disk 8 of high speed rotates formation at a high speed, collide with follow-up sudden pulverized particles again, shear, rub and cut, produce strong autogenous grinding between the material and become fine powder, crushing process carries out repeatedly, and the crunch that the eddy flow field at center wherein produces changes can make material be subjected to alternate stress and further broken the dispersion.Under high speed impact, obtain the identical particle of material crystalline state.Part particle gap between high-speed abrasion-proof rotating disk 8 and high hardness wear-resisting lining ring 12 falls crushing chamber cylindrical shell 13 bottoms, and the strong bump that is subjected to strong wind blade 10 again becomes fine powder, and the high-pressure blast of sending into dustproof blast pipe 37 presses the continuation pulverizing of crushing chamber top.Little fan blade dust cap 7 under the high speed rotating plate 8 rotates with speed with high speed rotating plate 8, will isolate near the labyrinth near the dust granules in main shaft 9 labyrinths, avoids dust to fall into bearing, and bearing is further protected, and guarantees that the bearing of pulverizer normally moves.At the powder that falls into the crushing chamber bottom, a part of superhard particles or ionized impurity can be by opening unloading scum pipe 38 instant discharges outside the bodies, to alleviate and the operating load of stable pulverizer, also improved the purity of product simultaneously.The new wind of high pressure is supplied the required normal air quantity of pulverizing unit running from high pressure blast pipe 18 with looping back airduct 17, makes material through looping back airduct 17 stably in central charging simultaneously, improves crush efficiency greatly.Ultra-fine grain after pulverizing in crushing chamber under the guiding guiding of constraint circle 15, enters center graded region classification with ascending air.Owing to be subjected to the effect of grading wheel 19 internal negative pressure axle suction, the Dual-Phrase Distribution of Gas olid of carrying discrete particles secretly is under the attraction of negative pressure, near graded blade 25, when the gap of Dual-Phrase Distribution of Gas olid by graded blade 25, during the ecto-entad motion, particle is done rotation at a high speed in centrifugal force field; Bigger particle is lost kinetic energy by being thrown to the grading room cylinder inboard wall under powerful action of centrifugal force, and falls back to crushing chamber continue to be crushed to qualified fineness under the gravity effect; , move to internal rotor with air-flow then under the use of gas viscous force than granule, being discharged by the collection tube cell then becomes product.The rotating speed height of grading wheel 19 can be regulated by frequency modulator, the product of different-grain diameter can be obtained; Rotating speed is high more, and product granularity is thin more.The setting of machinery metal wheel sealing device 27 and mechanical metal wheel lower seal prevents particle from the gap between grading wheel rotor and the outlet, and " short circuit " enters in the product, has stopped " running thick " phenomenon effectively.The principle of this device is, when the minute wheel crop rotation runs up, particle is intercepted course by the gap between rotor and the outlet by force by mechanical metal wheel sealing device, increased and passed through resistance, this resistance substantially exceeds particle directly enters grading wheel inside from graded blade 25 flow resistance, force particle to pass through, thereby reach the purpose of accurate classification from graded blade 25.And mechanical metal wheel lower seal is arranged along graded blade 25 outer rims; and become minim gap to cooperate with graded blade; enlarged the scope of sealing device " shielding " particle " short circuit "; further increased the resistance of particle " short circuit "; more effectively protect the precision of gradation, improved product quality.Whole unit is in the negative pressure running status all the time in the system when work.

Claims

1, a kind of high-speed rotational ultra-fine grinding autogenous tumbling mill, comprise: base (1), main motor (5), axle bed (6), crushing chamber simplified (13), main shaft (9), high-speed abrasion-proof rotating disk (8), high hardness wear-resisting lining ring (12), high rigidity is pulverized plate (11), feed pipe (16), loop back airduct (17), constraint circle (15), unloading scum pipe (38), middle cylinder body (14), grading wheel (19), the high-efficiency low-resistance cyclone device, it is characterized in that: base is box style substructure (1), bearing block (6) and main motor (5) are housed on bedplate, in base member case, spindle drive is taken turns (2) transmission that is connected with main motor drive (3) by driving-belt (4), crushing chamber cylindrical shell (13) is housed on axle bed (6), in crushing chamber cylindrical shell (13) bottom, main shaft (9) upper end on the axle bed (6) is equipped with a conical wear-resisting rotating disk (8), go up the conical surface at wear-resisting rotating disk (8) 4 blocks of above high rigidity pulverizing plates (11) are installed, on the conical surface 24 above strong wind blades (10) are installed down at high-speed abrasion-proof rotating disk (8), be close to high-speed abrasion-proof rotating disk (8) at crushing chamber (13) and locate to be equipped with high rigidity annular wear-resisting lining ring (12), become matched in clearance with high-speed abrasion-proof rotating disk (8), one dustproof blast pipe (37) and unloading scum pipe (38) are installed in crushing chamber (13) bottom, one little fan blade dust cap (7) is installed under the high speed rotating plate lower surface, in crushing chamber (13) upper surface simplified in one (14) are installed, middle cylinder body has charging aperture on (14), and be connected with feed pipe (16), with loop back airduct (17) and communicate, face the positive center of high-speed abrasion-proof rotating disk (8) and loop back airduct (17) bottom, looping back airduct (17) top then is connected with high pressure blast pipe (18), stretch out outside the cylindrical shell on the other end of high pressure blast pipe (18) therefrom simplified (14) top, link to each other with high pressure positive blower or Roots blower, constraint circle (15) is installed in middle cylinder body (14) bottom, in middle cylinder body (14) upper end grading room cylindrical shell (20) is installed, grading room cylindrical shell (20) is equipped with grading wheel (19) and grading wheel top chock (30) and grading wheel step (21), grading room cylindrical shell (20) top is equipped with powder collection cavity (41) and collection tube cell (31), collection tube cell (31) pass-out powder collection cavity cylindrical shell (41) is outer to link to each other with the high-efficiency low-resistance cyclone dust-precipitator, and the outside, simplified (20) upper end is equipped with frequency modulation motor (35) and is taken turns (33) transmission that links to each other by driving-belt (34) and grading wheel (19) spindle drive in the classification chamber.

2, autogenous tumbling mill according to claim 1, it is characterized in that grading wheel (19) is by grading wheel main shaft (32), grading wheel spindle drive wheel (33), grading wheel top chock (30), grading wheel step (21), labyrinth on the grading wheel (29), labyrinth in the grading wheel (40), labyrinth under the grading wheel (22), location axle sleeve (23), lower hub (24), last wheel hub (26), machinery metal wheel sealing device (27), machinery metal wheel lower seal (28), at grading wheel parallel uniform at least 100 above graded blades (25) of inlaying of hub outer rim direction up and down, wheel hub (26) and graded blade (25) become the minim gap cooperation on mechanical metal wheel sealing device (27) and the grading wheel, mechanical metal wheel lower seal (28) is installed in mechanical metal wheel sealing device (27) bottom simultaneously, extends the above length of 10mm downwards along grading wheel blade (25) outer rim.