CN104941769A - Solid material grinding method and solid material grinding machine - Google Patents

Solid material grinding method and solid material grinding machine Download PDF

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Publication number
CN104941769A
CN104941769A CN201510312768.7A CN201510312768A CN104941769A CN 104941769 A CN104941769 A CN 104941769A CN 201510312768 A CN201510312768 A CN 201510312768A CN 104941769 A CN104941769 A CN 104941769A
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abrasive
solid
grinding
hammering
plate
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CN201510312768.7A
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CN104941769B (en
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蔡昌荣
曹星
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蔡昌荣
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00Disintegrating plant with or without drying of the material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26Details
    • B02C13/282Shape or inner surface of mill-housings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26Details
    • B02C13/288Ventilating, or influencing air circulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18Adding fluid, other than for crushing or disintegrating by fluid energy

Abstract

The invention relates to a solid material grinding method and a grinding machine. Solid materials enter a grinding body of a grinding room after being subjected to primary air classification, and are thrown onto a lining plate along the radial direction to be broken due to collision under the centrifugal effect of the grinding body in high-speed rotation; after rebounding from the lining plate, the broken materials oppositely collide newly-added materials to be broken; large-particle materials drop under the gravity effect and upwards enter a working cabin through a guide pipe after being subjected to high-speed hammering; the working bin has the functions of feeding and wind mixing elutriation; the materials subjected to wind mixing elutriation enter a classifier to be classified; finished material products achieving the granularity requirements are collected by a spiral collector and a bag-type dust remover and then are discharged from a finished product discharging device; and materials not achieving the granularity requirements are returned to the grinding room to be reground. The grinding machine has the beneficial effects that the grinding granularity is small, the grinding efficiency is high, the fine powder collecting effect is good, the equipment is compact in structure, the maintenance cost is low, powder bodies with the granularity in a range of 80-1,500 meshes can be produced, and the grinding machine has the advantages of high yield ad stable quality particularly when producing ultrafine powder with the granularity being greater than 800 meshes and materials with higher rigidity.

Description

A kind of solid material Ginding process and solid material grinder
Technical field
The present invention relates to solid material crushing technology field, particularly relate to a kind of finished product materials particle size range at 80 ~ 1500 object solid material Ginding process and solid material grinder.
Background technology
Flour mill superfine communication technique is the new comminution engineering technology of of growing up along with Modern High-Tech and new material industry in recent years, now become one of most important industrial mineral and other raw material deep process technologies, significant to the development of modern high technology industry.Material, after fine, along with the poly-increasing of its surface area, can cause the change of other performance, and improve result of use and the utilization rate of material significantly.Super fine is infiltrating whole industrial department and high-tech sector, is described as the initial point of modern high technology.Superfine communication technique has been widely used in the numerous areas such as chemical industry, metallurgy, mining industry, building materials, daily use chemicals, food, medicine, agricultural, environmental protection and Aero-Space.
In grinding machine milling process, because the abrasive body in grinding machine and solid particle exterior surface produce collision between severe friction, solid particle, friction, and the sharp impacts of solid particle and cylinder inwall, friction, make solid particle with a large amount of electrostatic, cause abrasive body and backing surface adhere to by micro mist, formed so-called " cushion ", reduce abrasive media to the impact probability of material and abrasive action, thus reduce grinding machine operating efficiency, cause that mill output and product quality reduce, grain composition is unreasonable.The former Russian scholar research is pointed out: " bond the material bed of 200um on ball and liner plate, and consequent cushioning effect makes impact energy reduce by 80% ", the order of severity that the cushioning effect of the visible bed of material reduces impact energy.
Current domestic the most frequently used flour mill is raymond mill, vertical pulverizer, but it in use exists following point: 1) product fineness is low, and the fineness of common Raymond mill is generally below 500 orders; 2) failure rate of machinery is high, and power consumption is large, noise is large, and exhaust emission is large; 3) system effectiveness is low, and the gathering system separating effect of product is undesirable, a large amount of fine powders can not get effective collection and in system repetitive cycling cause power waste; 4) enter the larger particles in milling zone material and do not have enough time to grind broken particle and be often gathered in snail case afterbody by throwing inlet box, and constantly extend forward, air quantity was reduced gradually, easily causes traffic congestion, not powder delivery or few powder delivery, affect output; 5) Problem is inconvenient, and consumable accessory, wearing piece life cycle are short, and renewal cost is high.
Summary of the invention
The invention provides a kind of solid material Ginding process, have the advantages that grind size is thin, grinding efficiency is high and fines collection is effective, the solid material grinder simultaneously provided is applied widely, can production particle size range at 80 ~ 1500 object powders, especially when the above superfine powder of production 800 order or larger material (as the electric-melting magnesium) of hardness, its production efficiency is 3 ~ 5 times of normal mill, and constant product quality; Compact equipment, Problem is simple, and consumable accessory, wearing piece long service life, renewal cost is low, significantly can reduce production cost.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of solid material Ginding process, abrasive body High Rotation Speed produces ascending air, and grinding chamber top working bin has charging concurrently and wind mixes elutriation function, and working bin bulkhead offers circular air inlet mouth, makes to remain malleation in abrasive body, and provides wind to mix elutriation wind; Solid material after pre-broken enters grinder from working bin charging aperture, enters in abrasive body after first time selection by winnowing; Under the centrifugal action of the abrasive body of High Rotation Speed, material throws away from the material abrasive body that opening's edge is radial is clashed into broken by the liner plate being thrown grinding chamber sidewall, after rebounding with newly enter material and to liquidate percussion fragmentation; Large granular materials falls by gravity, bounce effect, after abrasive body hammering plate high-energy-rate hammering, grinding, material upwards enters working bin by conduit rotate the airflow function formed at abrasive body under, classifier is entered after mixing elutriation by wind, the finished product materials reaching granularity requirements is by the discharging of finished product discharger after spiral collector and sack cleaner are collected, and the material not reaching granularity requirements returns grinding chamber and again carries out crushing grinding.
When abrasive body is broken, the maximum line velocity of material is 120m/s, and the granularity of finished product materials is realized by the motor speed of adjustment clasfficiator.
For realizing a kind of solid material grinder of solid material Ginding process, comprising the grinding chamber, working bin and the clasfficiator that set gradually from the bottom to top, in the middle part of described grinding chamber, being provided with abrasive body, the grinding chamber sidewall corresponding with abrasive body establishes liner plate; Abrasive body is hollow structure, and top material receiving port is connected with working bin feed opening, is circumferentially with multiple material and throws away mouth and hammering plate; Grinding chamber and working bin are by multiple tubes connection, and working bin is provided with circular air inlet mouth; Clasfficiator connects spiral collector and sack cleaner successively, and spiral collector is connected finished product discharger respectively with the discharging opening of sack cleaner; The charging aperture of working bin connects raw material cabin additionally by device for transporting objects.
Described abrasive body is along the circumferential direction provided with multiple vertical or hammering plate of tilting, and each hammering plate is positioned at direction of rotation side and establishes 1 ~ 10 piece of wear-resistant block, and wear-resistant block surface is provided with high-wear-resistant alloy layer, adopts wear resistance electrode to weld between hammering plate with abrasive body body.
Described hammering plate is arranged in groups, and every component is upper hammering plate and lower hammering plate, and upper hammering plate and lower hammering plate are crisscross arranged at circumferencial direction, and a part or whole part of upper hammering plate, lower hammering plate is vertical or be obliquely installed, and angle of inclination is 5 ° ~ 30 °.
Described liner plate is the indent arc-shaped gear liner plate of dense arrangement, and surface is provided with high-wear-resistant alloy layer.
Described high-wear-resistant alloy layer is arranged by stickup, coating or built-up welding mode, and the trade mark of high-wear-resistant alloy is YL8.
Along the circumferential direction establish multiple arc deflector in described abrasive body, arc deflector throws away between mouth at each material.
Described finished product discharger is two-way flood dragon conveyer, and discharging opening is located between spiral collector and the discharging opening of sack cleaner, and the hand of spiral of finished product discharger discharging opening both sides conveying blade is contrary.
Described clasfficiator is squirrel-cage clasfficiator.
Compared with prior art, the invention has the beneficial effects as follows:
1) abrasive body possesses several functions, and one is air blast function, mixes elutriation by carrying out wind in the mass transport after fragmentation to working bin; Two is that material accelerates and radial direction is dished out function, material can be accelerated to 110 ~ 120m/s and radial direction is dished out and directly clashed into liner plate, all has souring, effectively abolish " cushion " hammering plate and liner plate; Three is possess hammering function, and hammering enters the material in grinding chamber; The structure of abrasive body is the guarantee realizing high-efficient grinding, improve finished product materials order number, improve mill efficiency, and therefore grinder output of the present invention is large, and end product quality is high, and grain composition is reasonable;
2) achieve the large-scale production reaching as high as 1500 order superfine powders, products application is extensive, and market prospects are good;
3) open charging aperture makes to remain malleation in grinding chamber, prevent the power waste because negative pressure causes the above fine powder of 800 order to cause at grinding chamber Inner eycle, enhance productivity, ensure fines collection effect, and drying can be carried out to material, wind cooling temperature lowering effect is played to grinding chamber;
4) working bin has feeding warehouse concurrently and wind mixes elutriator function, be communicated with, and by circular air inlet mouth air intake, make clasfficiator fall material and carry out elutriation repeatedly, classification efficiency is high with abrasive body by conduit;
5) all establish high-wear-resistant alloy layer with material making contact position in grinding chamber, abrasion resistance is good, and material iron-holder is little; Hammering plate working surface establishes polylith wear-resistant block, can according to the selective replacing of the degree of wear, and interchangeability is good, makes maintenance of equipment, changes the cost of consumable accessory and greatly reduce;
6) adopt two-way flood dragon conveyer as finished product discharging equipment, can be connected with the discharging opening of spiral collector and sack cleaner, and conveying capacity is even, two-way flood dragon conveyer discharging opening both sides adopt bidirectional screw blade to push material simultaneously, discharging efficiency is high, and Combination is good;
7) equipment overall structure is simple, compact in design, and volume is little, easily manufactures, and the product grading scope of production is large, easy to adjust, and compared with other superfine powder abrasive dust machines, producing product at the same level, to have production efficiency high, the advantage that cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of solid material grinder of the present invention.
Fig. 2-1 is the A-A sectional view one in Fig. 1.
Fig. 2-1a is the M direction view in Fig. 2-1.
Fig. 2-1b is the N direction view one in Fig. 2-1.
Fig. 2-1c is the N direction view two in Fig. 2-1.
Fig. 2-2 is the A-A sectional views two in Fig. 1.
Fig. 2-2a is the M direction view in Fig. 2-2.
Fig. 2-2b is the N direction view in Fig. 2-2.
Fig. 3 is materials abrasive machine main part sectional view of the present invention.
Fig. 4 is the structural representation of clasfficiator of the present invention.
Fig. 5 is the structural representation of two-way flood dragon conveyer of the present invention.
Diagram: 1. 2. The main frame, main motor (3) the grinding chamber 31. The grinding medium 310. A guide plate in 311. The guide plate 32. 33. The grinding chamber wall lining board 34 grinding chamber flange 35 hammer plate 35 a. on hammer plate 35 b. hammer plate under 36 wear-resisting block 37. The arc guide plate 4. Catheter 5. 51 job storehouse. The feeding mouth 52 annular inlet 6. Classifier 61. 62. A classifier motor belt transmission device 63. The classifier shaft 64. The support plate 65. 66. The blade rotor classifier discharging mouth 7. Material conveyer 8. 9. Raw materials storehouse material warehouse support 10. Screw feeder receive 11. Cloth bag dust collector 12. Finished goods out of the feeder 121. The double dragon conveyor motor 122. Double dragon conveyor drive shaft 123. The positive spiral blade 124. Reverse spiral blade 125. The spiral feeder discharging material mouth 126. The bag dust discharging material mouth 127 two-way dragon conveyor discharging mouth 13. Axial flow fan
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
As shown in Figures 1 and 3, a kind of solid material Ginding process of the present invention, abrasive body 31 High Rotation Speed produces ascending air, grinding chamber 3 top working bin 5 has charging concurrently and wind mixes elutriation function, and working bin 5 bulkhead offers circular air inlet mouth 52, make to remain malleation in abrasive body 31, and provide wind to mix elutriation wind; Solid material after pre-broken enters grinder from working bin charging aperture 51, enters in abrasive body 31 after first time selection by winnowing; Under the centrifugal action of the abrasive body 31 of High Rotation Speed, material throws away from the material abrasive body 31 that opening's edge is radial is clashed into broken by the liner plate 33 being thrown grinding chamber sidewall 32, after rebounding with newly enter material and to liquidate percussion fragmentation; Large granular materials falls by gravity, bounce effect, after abrasive body hammering plate 35 high-energy-rate hammering, grinding, material upwards enters working bin 5 by conduit 4 rotate the airflow function formed at abrasive body 31 under, clasfficiator 6 classification is entered after mixing elutriation by wind, the finished product materials reaching granularity requirements is by finished product discharger 12 discharging after spiral collector 10 and sack cleaner 11 are collected, and the material not reaching granularity requirements returns grinding chamber 3 and again carries out crushing grinding.
When abrasive body 31 is broken, the maximum line velocity of material is 120m/s, and the granularity of finished product materials is realized by the motor speed of adjustment clasfficiator 6.
Seeing Fig. 1, is the structural representation of a kind of solid material grinder of the present invention.Solid material grinder for realizing a kind of solid material Ginding process of the present invention, comprise the grinding chamber 3, working bin 5 and the clasfficiator 6 that set gradually from the bottom to top, be provided with abrasive body 31 in the middle part of described grinding chamber 3, the grinding chamber sidewall 32 corresponding with abrasive body 31 establishes liner plate 33; Abrasive body 31 is hollow structure, and top material receiving port is connected with working bin 5 feed opening, is circumferentially with multiple material and throws away mouth and hammering plate 35; Grinding chamber 3 is connected by multiple conduit 4 with working bin 5, and working bin 5 is provided with circular air inlet mouth 52; Clasfficiator 6 connects spiral collector 10 and sack cleaner 11 successively, and spiral collector 10 is connected finished product discharger 12 respectively with the discharging opening of sack cleaner 11; The charging aperture 51 of working bin 5 connects raw material cabin 8 additionally by device for transporting objects 7.
Seeing Fig. 2, is the structural representation of abrasive body 31 of the present invention.Described abrasive body 31 is along the circumferential direction provided with multiple vertical or hammering plate 35 of tilting, each hammering plate 35 is positioned at direction of rotation side and establishes 1 ~ 10 piece of wear-resistant block 36, wear-resistant block 36 surface is provided with high-wear-resistant alloy layer, adopts wear resistance electrode to weld between hammering plate 35 with abrasive body 31 body.
Described hammering plate 35 is arranged in groups, every component is upper hammering plate 35a and lower hammering plate 35b, and upper hammering plate 35a and lower hammering plate 35b is crisscross arranged at circumferencial direction, a part or whole part of upper hammering plate 35a, lower hammering plate 35b is obliquely installed, and angle of inclination is 5 ° ~ 30 °.
Described liner plate 33 is the indent arc-shaped gear liner plate of dense arrangement, and surface is provided with high-wear-resistant alloy layer.
Described high-wear-resistant alloy layer is arranged by stickup, coating or built-up welding mode, and the trade mark of high-wear-resistant alloy is YL8.
Along the circumferential direction establish multiple arc deflector 37 in described abrasive body 31, arc deflector 37 throws away between mouth at each material.
Described finished product discharger 12 is two-way flood dragon conveyer, and discharging opening 127 is located between the discharging material receiving port 125,126 of spiral collector 10 and sack cleaner 11, and the hand of spiral of finished product discharger discharging opening 127 both sides conveying blade 123,124 is contrary.
Described clasfficiator 6 is squirrel-cage clasfficiator.
See Fig. 3, be materials abrasive machine main part sectional view of the present invention, the main part of materials abrasive machine is made up of grinding chamber 3, working bin 5 and clasfficiator 6, is equipped with the necessary material loading of production line and drawing mechanism in addition.Main part is erected on mainframe 1, and grinding chamber 3 to be connected with mainframe 1 by adpting flange 34 and to form enclosure space.During work, abrasive body 31 is driven to rotate by the mair motor 2 be arranged on below mainframe 1 by axle sleeve, solid material after breaking in advance leaves in raw material cabin 8, and establish raw material cabin support 9 below raw material cabin 8, material is entered in working bin 5 through charging aperture 51 by device for transporting objects 7.Device for transporting objects 7 can be the conventional feeding devices such as bucket elevator, belt conveyor or vibra feeder, for belt conveyor in Fig. 1.Working bin 5 feed opening docks with the material receiving port offered in the middle part of abrasive body 31, such material directly to enter abrasive body 31 in also High Rotation Speed thereupon after selection by winnowing falls, simultaneously can suck air by circular air inlet mouth 52 that working bin 5 is offered, ensure that in abrasive body 3, pressure is always barotropic state, has the effect of air-cooled body simultaneously.Offer slag-drip opening bottom grinding chamber, remaining material slag after grinding is regularly removed.
Abrasive body 3 body is made up of baffle upper plate plate 310 and chin spoiler 311, hammering plate 35 one end is welded with abrasive body 3 body wear resistance electrode, the other end stretches out originally external, also can play the guiding role to centrifugal material of dishing out while playing hammer action, make it to produce forward between liner plate 33 to clash into, impact increases, and the frictional force that material is dished out in process simultaneously also can play souring to hammering plate 35, therefore can prevent the generation of " cushion ", increase substantially grinding efficiency.
The structure of grinding chamber 3 directly determines grinding efficiency and Grinding Quality, and in the present invention, hammering plate 35 can adopt various structures form.As shown in Fig. 2-1, abrasive body 3 is provided with 3 groups of hammering plates 35, often organizes hammering plate 35 and establishes hammering plate 35a and lower hammering plate 35b respectively.Upper hammering plate 35a and lower hammering plate 35b can be set to various ways again, and as shown in Fig. 2-1b, lower hammering plate 35b is vertically arranged, and upper hammering plate 35a body normal is arranged, but its upper angled is arranged.As shown in Fig. 2-1c, upper hammering plate 35a and lower hammering plate 35b is all obliquely installed, and incline direction is contrary.Fig. 2-1a is the front view of these two kinds of mode hammering plates 35, and each hammering plate 35 is provided with polylith wear-resistant block 36.As shown in Fig. 2-2, abrasive body 3 is provided with 3 hammering plates 35, and each hammering plate 35 is all obliquely installed (as shown in Fig. 2-2b), and it is equipped with polylith wear-resistant block 36 (as shown in Fig. 2-2a).
Liner plate 33 also can adopt various ways, and as shown in Fig. 2-1, liner plate 33 adopts the indent arc-shaped gear liner plate of intensive setting, and itself and material contact surface are large and time of contact is long, can improve grinding efficiency further.As shown in Fig. 2-2, what liner plate 33 adopted is comparatively common dentation liner plate, and its processing is relatively simple.
Also be provided with arc deflector 37 in abrasive body 3 body, make abrasive body 3 rotate the spiralling air-flow of rear generation, upwards transported by fine grained and enter in working bin 5 by conduit 4, material fully mixes elutriation with air in working bin 5 under the airflow function that liquidates.
Seeing Fig. 4, is the structural representation of clasfficiator of the present invention.Clasfficiator 6 provides power by motor 61, power transmission shaft 63 high-speed rotation is driven through belt drive unit 62, clasfficiator 6 adopts squirrel-cage clasfficiator principle, be fixed with blade rotor 65 at the circumferencial direction of power transmission shaft 63 by gripper shoe 64, the gas channel formed by the space between blade rotor 65 during rotation carries out classification to material.Be qualified finished product by the material of clasfficiator 6 smoothly, unsanctioned material to falling in working bin 5, and returns in grinding chamber 3 and again grinds.
Seeing Fig. 5, is the structural representation of two-way flood dragon conveyer of the present invention.Finished product discharger 12 of the present invention can adopt two-way flood dragon conveyer 12, and discharging opening 127 is located between the discharging opening 125,126 of spiral collector and sack cleaner, and the hand of spiral of finished product discharger discharging opening 127 both sides conveying blade is contrary.The two-way double-sheet arrangement of two-way flood dragon conveyer 12 can impel spiral collector 10 and the finished product in sack cleaner 11 fully to mix to reach rational grain composition.
The classified device outlet 66 of finished product materials after qualified and carrier pipe enter spiral collector 10 and collect, collection rate can reach about 70%, the fine grained mixed with air is in addition entered in sack cleaner 11 by spiral collector 10 top and collects further, spiral collector 10 and enter the finished product materials that sack cleaner 11 collects and all export by two-way flood dragon conveyer 12 is unified.In the present invention, because spiral collector 10 and sack cleaner 11 are located at the both sides of two-way flood dragon conveyer 12, the discharging opening 127 of two-way flood dragon conveyer is located between spiral collector discharging material receiving port 125 and sack cleaner discharging material receiving port 126, therefore two-way flood dragon conveyer helical blade adopts transport screw blade 123 and reverse acting spiral blade 124 two kinds of rotation direction blades, like this when motor 121 drives power transmission shaft 122 to rotate, the material flowed out by spiral collector and sack cleaner discharging opening is concentrated to the discharging opening 127 of two-way flood dragon conveyer and mixes simultaneously, thus improve discharging efficiency.
Following examples are implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention are not limited to following embodiment.In following embodiment, method therefor is conventional method if no special instructions.
[embodiment 1]
Institute's grinding material is talcum bits, and concrete technology parameter is in table 1;
Table 1
Analyzer rotating speed 280 revs/min 550 revs/min 835 revs/min 1110 revs/min
Product grading 800 orders 1000 orders 1250 orders 1500 orders
Output 2 tons/hour 1.5 tons/hour 0.9 ton/hour 0.5 ton/hour
[embodiment 2]
Institute's grinding material is electric-melting magnesium, and concrete technology parameter is in table 2;
Table 2
Analyzer rotating speed 280 revs/min
Product grading 200 orders
Output 1.5 tons/hour
[embodiment 3]
Institute's grinding material is magnesite clinker, and concrete technology parameter is in table 3;
Table 3
Analyzer rotating speed 280 revs/min
Product grading 200 orders
Output 1.5 tons/hour
In above 3 embodiments, all finished product percent of pass all reach more than 95%.

Claims (10)

1. a solid material Ginding process, is characterized in that, abrasive body High Rotation Speed produces ascending air, grinding chamber top working bin has charging concurrently and wind mixes elutriation function, and working bin bulkhead offers circular air inlet mouth, make to remain malleation in abrasive body, and provide wind to mix elutriation wind; Solid material after pre-broken enters grinder from working bin charging aperture, enters in abrasive body after first time selection by winnowing; Under the centrifugal action of the abrasive body of High Rotation Speed, material throws away from the material abrasive body that opening's edge is radial is clashed into broken by the liner plate being thrown grinding chamber sidewall, after rebounding with newly enter material and to liquidate percussion fragmentation; Large granular materials falls by gravity, bounce effect, after abrasive body hammering plate high-energy-rate hammering, grinding, material upwards enters working bin by conduit rotate the airflow function formed at abrasive body under, classifier is entered after mixing elutriation by wind, the finished product materials reaching granularity requirements is by the discharging of finished product discharger after spiral collector and sack cleaner are collected, and the material not reaching granularity requirements returns grinding chamber and again carries out crushing grinding.
2. a kind of solid material Ginding process according to claim 1, is characterized in that, when abrasive body is broken, the maximum line velocity of material is 120m/s, and the granularity of finished product materials is realized by the motor speed of adjustment clasfficiator.
3. for realizing the solid material grinder of a kind of solid material Ginding process according to claim 1, it is characterized in that, comprise the grinding chamber, working bin and the clasfficiator that set gradually from the bottom to top, in the middle part of described grinding chamber, be provided with abrasive body, the grinding chamber sidewall corresponding with abrasive body establishes liner plate; Abrasive body is hollow structure, and top material receiving port is connected with working bin feed opening, is circumferentially with multiple material and throws away mouth and hammering plate; Grinding chamber and working bin are by multiple tubes connection, and working bin is provided with circular air inlet mouth; Clasfficiator connects spiral collector and sack cleaner successively, and spiral collector is connected finished product discharger respectively with the discharging opening of sack cleaner; The charging aperture of working bin connects raw material cabin additionally by device for transporting objects.
4. a kind of solid material grinder according to claim 3, it is characterized in that, described abrasive body is along the circumferential direction provided with multiple vertical or hammering plate of tilting, each hammering plate is positioned at direction of rotation side and establishes 1 ~ 10 piece of wear-resistant block, wear-resistant block surface is provided with high-wear-resistant alloy layer, adopts wear resistance electrode to weld between hammering plate with abrasive body body.
5. a kind of solid material grinder according to claim 3 or 4, it is characterized in that, described hammering plate is arranged in groups, every component is upper hammering plate and lower hammering plate, and upper hammering plate and lower hammering plate are crisscross arranged at circumferencial direction, a part or whole part of upper hammering plate, lower hammering plate is vertical or be obliquely installed, and angle of inclination is 5 ° ~ 30 °.
6. a kind of solid material grinder according to claim 3, is characterized in that, described liner plate is the indent arc-shaped gear liner plate of dense arrangement, and surface is provided with high-wear-resistant alloy layer.
7. a kind of solid material grinder according to claim 4 or 6, is characterized in that, described high-wear-resistant alloy layer is arranged by stickup, coating or built-up welding mode, and the trade mark of high-wear-resistant alloy is YL8.
8. a kind of solid material grinder according to claim 3, is characterized in that, along the circumferential direction establish multiple arc deflector in described abrasive body, arc deflector throws away between mouth at each material.
9. a kind of solid material grinder according to claim 3, it is characterized in that, described finished product discharger is two-way flood dragon conveyer, and discharging opening is located between spiral collector and the discharging opening of sack cleaner, and the hand of spiral of finished product discharger discharging opening both sides conveying blade is contrary.
10. a kind of solid material grinder according to claim 3, is characterized in that, described clasfficiator is squirrel-cage clasfficiator.
CN201510312768.7A 2015-06-09 2015-06-09 A kind of solid material Ginding process and solid material grinder Active CN104941769B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN105289820A (en) * 2015-11-06 2016-02-03 嘉兴市高正高分子材料有限公司 Mixing processing pulverizer
CN105970769A (en) * 2016-06-03 2016-09-28 徐州徐工筑路机械有限公司 Horizontal extending type finished bituminous mixture cabin
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CN110743661A (en) * 2019-10-29 2020-02-04 广东省农业科学院 Efficient milling machine

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