CN103223365A - Crusher with functions of impact crushing and extrusion shearing crushing - Google Patents
Crusher with functions of impact crushing and extrusion shearing crushing Download PDFInfo
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- CN103223365A CN103223365A CN2013101535610A CN201310153561A CN103223365A CN 103223365 A CN103223365 A CN 103223365A CN 2013101535610 A CN2013101535610 A CN 2013101535610A CN 201310153561 A CN201310153561 A CN 201310153561A CN 103223365 A CN103223365 A CN 103223365A
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Abstract
The invention discloses a crusher with functions of impact crushing and extrusion shearing crushing. The crusher comprises a motor, a housing, a rotor assembly and a stator assembly, wherein the rotor assembly comprises a rotor disc and a rotor pin, the stator assembly comprises a stator disc and a stator pin, the rotor pin and the stator pin comprise quadrangular prism-shaped steel billets, the front portions of tangential direction work surfaces of the rotor pin and the stator pin are standard zigzag surfaces, the end of the tangential direction work surface is provided with a first special-shaped zigzag, a width of the top portion of the first special-shaped zigzag is at least two times the width of the tooth bottom of an ordinary zigzag on the front portion of the tangential direction work surface, and an included angle formed by the tangential direction work surface of the stator pin/the rotor pin and a tangent surface of the prism surface A passing through the axis line of the stator pin/the rotor pin is more than or equal to 5 DEG and is less than or equal to 20 DEG. The crusher has characteristics of simple structure, high crushing rate, high crushing efficiency, low cost, small size, wide application range, simple operation, good sealing, less wearing parts, low auxiliary material consumption, high efficiency, and energy saving.
Description
Technical field
The present invention relates to a kind of pulverizer with bump pulverizing and extrusion shearing pulverizing function, this pulverizer is used for the various fragility or the plasticity solid material of certain particle size are ground into fine particle at numerous areas such as cereal processing, feed processing, metallurgy, Chemical Engineering, plastics, medicine, building, electronics and the energy.
Background technology
The wheat flour milling industry is extensive use of a kind of size reduction machinery of impacting type flour mill by name both at home and abroad.Percussion grinder is by casing, and rotor part, stator component and motor are formed.Wherein rotor part comprises wheel hub, is fixed on the disk rotor dish on the wheel hub and is installed at least 3 circles, every circle dozens of rotor pin on the rotor disk.Stator component comprises cover plate, fixes stator dish on the cover board and is installed in the circle of at least 3 on the stator dish, every circle dozens of stator pin.Existing percussion grinder mainly clashes into the purpose that between rotor pin and the stator pin material particles in 1～2mm reaches comminuting matter strongly by the rotor pin of high-speed motion.More than ten years facts have proved in a large number that the large scale application of wheat flour milling industry percussion grinder has simple in structure, crush efficiency, price is cheap, many advantages such as the convenient and energy consumption of installation and maintenance is low, the material temperature rise of bump back is higher to contain shortcomings such as impurity output flour ash content raising for a long time such as wheat skin with bump but also have simultaneously.In addition, limited because of space effect of impact power, during toughness materials such as bump abrasive dust crushing rubber and plastics, efficient is on the low side, and can not be used for high strength material such as powder ore.Therefore applicable surface is narrow partially also is the shortcoming of existing percussion grinder.
In powder technology (research is ground into an interdiscipline of the characteristic etc. of pulverous technology and equipment and various powders, inter-trade comprehensive extremely strong technology-oriented discipline with solid material) field by a kind of gyratory crusher of forming by two truncateds cone.Gyratory crusher to decide awl (claiming outer cone again) be the part of frame, mantle (claiming inner cone again) is fixed on the main shaft.The center line of main shaft intersects at the O point with the center line of fixed awl, main shaft is suspended on the intersection point O, and the main shaft lower end is inserted in (center of lining is on the center line of fixed awl) in the eccentric bush versatilely, like this, during main axis rotation, mantle is done to revolve partially along the inner surface of fixed awl and is moved.Near deciding the awl place, material is subjected to mantle extruding and shear action and is pulverized; Decide the awl place departing from, Po Sui material falls to discharging by self gravitation.Gyratory crusher is the machinery with the work of extruding-shearing grinding mode.Advantages such as it is big that it has production capacity, and comminution ratio (go into the machine average grain diameter and go out the ratio of machine average grain diameter) is big, and unit power consumption is low, but complex structure is also arranged, investment cost is big, repair and maintenance is difficult and can only be used for shortcoming such as broken larger particles material.Though and field of powder engineering use very widely ball mill and have that adaptability is strong, production capacity is big, comminution ratio is big, simple in structure, operation is reliable and advantages such as good airproof performance, also big, big, the abrasive body of noise and liner plate consumption is big and shortcoming such as inefficiency in the time of need joining expensive reductor, work of organism heaviness, investment.Wherein effectively utilization rate of electrical only is about 2% to be its most outstanding and harm is maximum shortcoming.
Chinese patent application 201210481139.3 has announced that a key name is the new technology (following all the abbreviation announced new technology) with pulverizer of bump pulverizing and extrusion shearing pulverizing function, and this technology also is the present application people's a research and development achievement.This technology attempts to come raising equipment to pulverize function, prolong pin service life and make pulverizer have extrusion shearing and pulverize function by following technological means: the pin that 1. designs a welding cross section and be L shaped wear member; 2. being provided with on wear member with tangential working face angle is 15 °～35 ° inclined cut; 3. when being installed to the stator pin on the stator dish, make the tangential working face of stator pin and what intersect with it is that the tangent plane angle on the face of cylinder of center line is 10 °～30 ° (the following stator pin that all is called for short reverses 10 °～30 °) with the stator disk axis.After submitting patent application to, we develop model machine and test, and find that the test testing result and the desired value of model machine pulverizing function has a long way to go.
After the test, the present inventor creatively uses wear-resistant test (promptly processing fine sand with model machine) to analyze the reason that reason result of the test and desired value differ greatly again.Pulverize function and wear-resistant test result analysis according to model machine, the applicant finds that there is following obvious shortcoming in the technology in this aforementioned patent application:
1. only compare highlyer by about 15% with model machine processing granularity at the detected flour extraction rate of wheat endosperm below the 0.5mm, reach the pulverizing function of analyzing in the patent document far away and improve 1 times level than the existing percussion grinder of test processing material of the same race.This proves that the foundation of theory analysis at that time is wrong or it is comprehensive inadequately to analyze, and analytical method inadequately comprehensively, rationally.
2. wear-resistant test was carried out after 20 hours, detect and find that first sawtooth of the tangential working face of rotor pin has just had the vestige (the crest line tip of sawtooth tip end surface projection grinds gloss) that is ground to, but the tip of the terminal sawtooth of the tangential working face of stator pin has found out stock removal obviously there be (crest line of sawtooth tip end surface projection is worn away, and glossy part is than the wide several times of protruding crest line).Analyze in view of the above, the terminal sawtooth rapid wear (the each several part rate of wear is inhomogeneous) of the tangential working face of stator pin, cause that minimum clearance increases fast between rotor pin and the stator pin, though pastern divides wearing and tearing, but also cause the equipment degradation rate to reduce after minimum clearance increases fast and pin is difficult to reach the index described in the aforementioned patent document service life, this becomes announces that one of new technology lacks greatly.
3. wear-resistant test was carried out after 20 hours, detected and found that the tangential working face of rotor pin has only first sawtooth tip the vestige that is ground to be arranged, the vestige that the sawtooth of back then all is not ground to.This proves that the later sawtooth of first sawtooth is inoperative, do not interact with material, the relevant argumentation do not square with the fact in this patent specification, and the fact shows that the zigzag structure of the tangential working face of rotor pin does not play due effect, and this becomes the shortcoming of announcing new technology.
4. model machine is used to process granularity (plastic density is little greater than the plastic pellet of minimum clearance between rotor pin and the stator pin, certain toughness is arranged, it is littler than extrusion shearing certainly to clash into broken proportion, so analyze by high speed extrusion shearing pulverizer) time, a large amount of particles contained in the material after finding to process greater than minimum clearance between rotor pin and the stator pin.Our analysis and judgement in view of the above, rotor pin inclined cut and the tangential working face of stator pin clamp together that to hold the material particles probability low should be main cause.Carry out further creative the analysis by the present application people, find to cause clamping that to hold the low reason of probability be that rotor pin inclined cut is excessive with tangential working face angle.Therefore announced that inclined cut and inclined cut and tangential working face angle being set excessive at the rotor pin in the new technology also is to have announced the new technology shortcoming.
Summary of the invention
The object of the present invention is to provide that a kind of scope of application is wide, the pulverizer of low-consumption high-efficiency, can either use, can use as high speed extrusion shearing pulverizer again as high-efficiency percussion grinder.
For achieving the above object, the pulverizer with bump pulverizing and extrusion shearing pulverizing function of the present invention comprises motor, casing, rotor part and stator component, and motor is fixed on bottom of shell; Rotor part comprises wheel hub, be fixed on the rotor disk on the wheel hub and be that the center along the circumferential direction evenly distributes and is installed in the circle of at least 3 on rotor disk rotor pin with the axis of rotor disk, and rotor part is positioned at casing and is fixed on the motor shaft by wheel hub; Stator component comprise cover plate, fixing on the cover board the stator dish and be that the center along the circumferential direction evenly distributes and is installed in the sub-pin of the delineation of at least 3 on the stator dish with the axis of stator dish, stator component is fixed on the casing face by its cover plate; Described rotor pin is identical with the stator column latch structure, and including cross section is foursquare four prism type steel billet, and steel billet is provided with the coupling part; The L-shaped wear member in cross section is welded or be bonded with in the adjacent two sides of four prism type steel billet; Axis with rotor disk is the center, the wear member of described rotor pin and stator pin has the tangential working face that intersects vertically and two working faces of working face radially, the above two working face intersection is a front end with wear member, tangential working face front portion is the standard serrated-surface, and this standard serrated-surface is provided with common sawtooth; The end of tangential working face is provided with one first special-shaped sawtooth, and the top width of this first special-shaped sawtooth is the twice of the anterior common sawtooth tooth bottom width degree of tangential working face at least;
With the imaginary circles cylinder with stator dish or rotor disk coaxial line is the A cylinder, and the tangential working face of stator pin and the angle of A cylinder between the tangent plane at stator column pin axis place that passes this stator column pin axis are α, 5 °≤α≤20 °; The tangential working face of rotor pin and the angle of A cylinder between the tangent plane at rotor pin axis place that passes this rotor pin axis are β, 5 °≤β≤20 °.
The above two working face intersection is a front end with wear member, and the radially working face front portion of the wear member of rotor pin and stator pin is the serrated-surface of standard, and this standard serrated-surface is provided with common sawtooth; Radially the end of working face is provided with one second special-shaped sawtooth, and the top width of this second special-shaped sawtooth is the twice of the anterior common sawtooth tooth bottom width degree of working face radially at least.
Described steel billet coupling part is screw rod or polished rod; Described wear member is formed by carbide alloy or the manufacturing of special cermacis class ultra-hard abrasive material.
The first special-shaped sawtooth on the described tangential working face along the width of rotor running circumferencial direction more than or equal to 4 millimeters.
Advantage short summary of the present invention is as follows:
The present invention and existing percussion grinder ball mill compare with size reduction machineries such as gyratory crushers still possess simple in structure, pulverizing is powerful, the cost price is cheap, volume and floor space are little, installation and maintenance convenient, simple to operate, good airproof performance, few easy workout part, auxiliary material consumption less with advantage such as energy-efficient.The present invention with announce that the advantage that new technology is compared is to have overcome all shortcomings of announcing new technology, make and announce that advantage can all be cashed described in the new technology patent application document.Advantage has:
1) the present invention is when installing the rotor pin, the tangential working face of rotor pin and the angle of A cylinder between the tangent plane at rotor pin axis place that passes this rotor pin axis are β, 5 °≤β≤20 ° (identical) with the corresponding α of stator pin angle, all sawtooth can both be clashed into or extrusion shearing to material particles.Because participating in the sawtooth quantity of comminution process increases more than 1 times, and the distance of these sawtooth and the tangential working face of stator pin is short (has announced 1 sawtooth of every reach on the tangential working face of new technology rotor pin, distance increases 0.3～0.6mm, the present invention only increases 0.2mm) so rotor pin impact strength improves, guarantee that the pulverizing function ratio of pulverizer has announced that new technology obviously improves.
2) among the present invention wear member tangential and radially two working face ends a special-shaped sawtooth all is set, the top width of this abnormity sawtooth is the twice of common sawtooth tooth bottom width degree on the working face at least.Because special-shaped sawtooth along the width of rotor running circumferencial direction usually (thickness of welding hard metal tip is 2mm on the existing percussion grinder pin corresponding with it) more than the 4mm, so the service life of pin among the present invention (pin comprises wear member) is at least than prolonging 1 times the service life of the pin that has percussion grinder now.If after considering that the sawtooth in special-shaped sawtooth the place ahead participates in comminution process, the factor affecting such as width further lengthening of rotor pin along rotor running circumferencial direction, the service life of pin of the present invention is at least than prolonging 2 times the service life of existing percussion grinder pin.This has not only thoroughly overcome the great shortcoming of having found of announcing pin weak point in service life in the new technology, and this new technology spread using value is increased substantially, the scope of application is expanded significantly, applies necessary and the good condition created for adopting the present invention in industries such as plastic processing and ore pulverizing.
3) the present invention in the announcement technology radially the smooth flat of working face make serrated-surface into, can make rotor the pin radially intensity and the radially all increases significantly of impact strength of working face of material particles bump stator pin of working face bump material, make and adopt the degradation rate of bump pulverizer of the present invention obviously to improve.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of rotor pin and stator pin;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation under the mated condition of rotor pin and stator pin;
Fig. 5 is the enlarged drawing that Fig. 4 rotor pin and stator pin are the A place of maximal clearance state;
Fig. 6 is the enlarged drawing that Fig. 4 rotor pin and stator pin are the B place of minimum clearance state.
The specific embodiment
The direction explanation:
The pin parts of installing on rotor disk 8 and stator dish 7 such as (comprising rotor pin 6 and stator pin 5) is an introversion with the direction near rotor disk 8 or stator dish 7 axis, otherwise is export-oriented; The direction tangent with disk rotor dish 8 or stator dish 7 is tangential, and direction is the direction of rotation of rotor disk 8 shown in Fig. 4 mean camber line arrow.
The structure explanation:
Extremely shown in Figure 4 as Fig. 1 and Fig. 2, the pulverizer with bump pulverizing and extrusion shearing pulverizing function of the present invention comprises motor 10, casing 4, rotor part and stator component.Casing 4 is discoid housings that a periphery has flash, and casing 4 tangentially is provided with a rectangle discharging opening 1, fixedlys connected with motor 10 in the lower surface of casing 4, also is provided with charging aperture 2 on the casing 4.
Rotor part comprises wheel hub 9, is fixed on the rotor disk 8 on the wheel hub 9 and is installed in the circle of at least 3 on the rotor disk 8 rotor pin 6 that rotor pin 6 is that the center along the circumferential direction evenly distributes with the axis of rotor disk 8.Rotor part is positioned at casing 4 and is fixed on by wheel hub 9 on the axle of motor 10.
Stator component comprises cover plate 3, is fixed on the stator dish 7 on the cover plate 3 and is installed in the sub-pin 5 of the delineation of at least 3 on the stator dish 7 that stator pin 5 is that the center is along the circumferential direction uniform with the axis of stator dish 7.Stator component is fixed on the face of casing 4 by cover plate 3.
To shown in Figure 4, rotor pin 6 of the present invention is identical with stator pin 5 structures as Fig. 2, and including cross section is foursquare four prism type pin steel billet 11 and the wear member 12 that welds or be bonded on 11 two adjacent side of pin steel billet.Wear member 12 is formed by carbide alloy or the manufacturing of special cermacis class ultra-hard abrasive material.Pin steel billet 11 is provided with coupling part 13, and coupling part 13 is screw rod or polished rod; The cross section of wear member 12 is L-shaped.
Extremely shown in Figure 6 as Fig. 2, axis with rotor disk 8 is the center, and the wear member 12 of described rotor pin 6 and stator pin 5 has the tangential working face 12A that intersects vertically and two working faces of working face 12C (these two working faces are as the tangential working face of rotor pin 6 and stator pin 5 and working face radially) radially.Intersection with described two working face 12A, 12C on the wear member 12 is a front end, and tangential working face 12A front portion is the standard serrated-surface, and this standard serrated-surface is provided with common sawtooth 51; The end of tangential working face 12A is provided with one first special-shaped sawtooth 12B, the top width of this first special-shaped sawtooth 12B be at least the anterior common sawtooth 51 tooth bottom width degree B(of the tangential working face 12A of wear member as shown in Figure 3) twice, be preferably 5～10 times and the first special-shaped sawtooth 12B along the width (i.e. the top width of the first special-shaped sawtooth 12B) of rotor running circumferencial direction more than or equal to 4 millimeters.
As shown in Figure 4, with the imaginary circles cylinder with stator dish 7 or rotor disk 8 coaxial lines is A cylinder 52, the tangential working face of stator pin 5 and the angle of A cylinder 52 between the tangent plane at stator column pin axis place that passes this stator column pin axis are α, 5 °≤α≤20 °.
As shown in Figure 4, the tangential working face of rotor pin 6 and the angle of A cylinder 52 between the tangent plane at rotor pin 6 axis places that passes these rotor pin 6 axis are β, 5 °≤β≤20 °.
Extremely shown in Figure 6 as Fig. 3 and Fig. 4, with wear member 12 the above two working face 12A, 12C intersection is front end, the radially working face front portion of the wear member 12 of rotor pin 6 and stator pin 5 is the serrated-surface of standard, and this standard serrated-surface is provided with common sawtooth 51; Radially the end of working face is provided with one second special-shaped sawtooth 12D, and the top width of this second special-shaped sawtooth 12D is the twice of the anterior common sawtooth 51 tooth bottom width degree of working face radially at least.
As Fig. 4, Fig. 3 and Fig. 5 and shown in Figure 6, stator pin 5 with the axis of stator dish 7 be the center along the circumferential direction evenly distribute to be installed among stator dish 7(Fig. 4 represent with solid outline) on, rotor pin 6 with the axis of rotor disk 8 be the center along the circumferential direction evenly distribute be installed among rotor disk 8(Fig. 4 the with dashed lines profile and represent) on, have the sub-pin 5 of a delineation except that inner ring rotor pin 6 has only the outside, all the other every circle rotor pins 6 all are clipped between the sub-pin 5 of inside and outside each delineation.The wear member 12 of stator pin 5 is a radially working face 21 of stator pin 5 in the face of the radial surface (being the radially working face 12C of wear member 12) of material, and the wide especially second special-shaped sawtooth in the top of this working face end is as stator pin 5 working face abnormity sawtooth 20 radially.With stator pin 5 radially the stator pin that intersects vertically of working face 21 5 inboard tangential surfaces (being the tangential working face 12A of wear member 12) be stator pin 5 tangential working faces 23, the first wide especially special-shaped sawtooth of the top of stator pin 5 tangential working face 23 ends is the special-shaped sawtooth 22 of stator pin 5 tangential working faces.Wear member 12 is a radially working face 25 of rotor pin 6 in the face of the radial surface (being the radially working face 12C of described wear member 12) of material on the rotor pin 6, and the wide especially sawtooth (being the described second special-shaped sawtooth) in the top of working face 25 ends is a radially working face abnormity sawtooth 26 of rotor pin 6.The tangential surfaces, rotor pin 6 outsides (being the tangential working face 12A of wear member 12) that intersect vertically with the radially working face 25 of rotor pin 6 are the tangential working faces 27 of rotor pin 6, and the wide especially sawtooth (being the described first special-shaped sawtooth) in the top of this working face end is the special-shaped sawtooth 28 of rotor pin 6 tangential working faces.
As Fig. 4, Fig. 5 and shown in Figure 6, when rotor of the present invention was pressed the rotation of direction shown in Fig. 4 arrow, the radial clearance between rotor pin 6 and the stator pin 5 is the change procedure from the maximal clearance to minimum clearance always.Rotor pin 6 beginning is during near a certain stator pin 5, on the tangential working face 27 of rotor pin on the most advanced and sophisticated and stator pin 5 tangential working faces 23 of first sawtooth the smallest radial spacing at first sawtooth tip be called the shown in Figure 5 of a-quadrant and amplification among maximal clearance L1(between rotor pin 6 and the stator pin 5 such as Fig. 4).When rotor pin 6 was about to away from a certain stator pin 5, the tooth top of the tangential working face abnormity of rotor pin sawtooth 28 and smallest radial spacing between the tooth top of stator pin 5 tangential working faces abnormity sawtooth 22 were called regional shown in Figure 6 with amplification of B among minimum clearance L2(between rotor pin 6 and the stator pin 5 such as Fig. 4).Efficient for pursuing, when the present invention designs, should dwindle minimum clearance numerical value as far as possible, the numerical value that will guarantee maximal clearance L1 simultaneously is 4～20 times of minimum clearance L2.
When the present invention worked, the material that is entered the space between casing 4 inner stator dishes 7 and the rotor disk 8 by charging aperture 2 moved to outer rim from casing 4 centers under the impact effect of centrifugal force, wind-force and rotor pin 6 that the rotor rotation forms.Material particles when passing space narrow and small between rotor pin 6 and the stator pin 5, by at least 3 circle rotor pins 6 bump or be held between rotor pin 6 and the stator pin 5 after the extrusion shearing fragmentation by pincers repeatedly, is discharged through discharging opening 1 in motion process.
When the present invention is used to process granularity less than the material of minimum clearance L2 between rotor pin 6 and the stator pin 5, rotor pin 6 can not contact material particles simultaneously with stator pin 5, equipment mainly reaches the comminuting matter purpose by rotor pin 6 bumps, so the present invention can be called high-efficiency percussion grinder in this case.High-efficiency percussion grinder in the course of the work, all go into the machine material under the effect of rotor rotary centrifugal force, wind-force and rotor pin 6 impacts, all be certain to do simultaneously circumferencial direction motion and radial motion from inside to outside, promptly all go into the machine material all can be simultaneously circumferentially and radially both direction motion.When bumping against the stator pin material particles that radially movement velocity die-offs on the working face 21 in outwards motion, by these stator pin 5 outside rotor pins 6 bumps, impact strength must increase.And bump against the material particles that movement velocity die-offs on the tangential working face 23 of stator pin, then by rotor pin 6 bumps of these stator pin 5 inboards, the amplification of impact strength is bigger.Maximal clearance L1 (gap between existing percussion grinder rotor pin 6 and the stator pin 5 mostly is 1mm) more than the 4mm, means that the inventory that can enter the space between rotor pin 6 and the stator pin 5 when the present invention works is two or three times of prior art at least between rotor pin 6 of the present invention and the stator pin 5.Because all materials all move along both direction circumferentially and radially, so have at least 80% can strike on the stator pin 5 tangent-saw profile of tooth working faces in this part material, it is zero that the movement velocity of both direction is all die-offed.Have 6 sawtooth at least on the tangential working face 27 of rotor pin of the present invention, the design size of minimum clearance L2 between tangential working face abnormity sawtooth 28 of rotor pin and the tangential working face abnormity of the stator pin sawtooth 22 is 1mm, sawtooth before the tangential working face abnormity of the rotor pin sawtooth 28, sawtooth position of every reach, distance increases 0.2mm between sawtooth and the stator pin 5 tangential working face abnormity sawtooth 22.Because sawtooth quantity is many on the rotor pin 6 tangential working faces, these sawtooth and stator pin 5 tangential working faces distances mostly less than the 2mm(percussion grinder flour mill long-term widely apply facts have proved that the gap is 2mm between rotor pin 6 and the stator pin 5 time, equipment still has goodish pulverizing function), add the tangential working face 21 of stator pin of the present invention owing to be provided with sawtooth, can die-off the movement velocity of a large amount of material particles is zero, impact strength is increased substantially, so the present invention does the high-efficiency percussion grinder time spent, degradation rate is than the degradation rate of existing percussion grinder and announced that the actual measurement degradation rate of new technology prototype test is all high about 1 times.
When the present invention is used to process granularity greater than the material of minimum clearance L2 between rotor pin 6 and the stator pin 5, the present invention mainly is held between the two material particles by 5 pairs of rotor pin 6 and stator pins by pincers and applies the extrusion shearing active force and reach the comminuting matter purpose, so the present invention can be called high speed extrusion shearing pulverizer (rotor pin 6 linear velocities are mostly more than 60m/S) in this case.During the work of high speed extrusion shearing pulverizer, the material that enters casing 4 by charging aperture 2 when distance is relatively large between rotor pin 6 and stator pin 5 near stator pin 5, rotor pin 6 is near each stator pin 5, distance reduces gradually between the two, the moment that between distance and material particles granularity are tending towards equating, rotor pin 6 and stator pin 5 clamp together and hold material particles, and rotor pin 6 continues motion, and huge extrusion shearing power is pulverized material particles rapidly.Among the present invention, when being installed to stator pin 5 on the stator dish 7, make stator pin 5 tangential working face and and it intersects is that angle α between the tangent plane on the face of cylinder (being A cylinder 52) of center line is 5 °～20 ° angles with stator dish 7 axis; When rotor pin 6 is installed on the rotor disk 8, also to make rotor pin 6 tangential working face and and it intersects is that angle β between the tangent plane on the face of cylinder of center line is 5 °～20 ° angles with rotor disk 8 axis; This has just guaranteed that rotor pin 6 and stator pin 5 can hold the material particles pincers that the overwhelming majority is positioned between the two, and forms the duty of two sawtooth working faces to rubbing with the hands.So, solid material at all materials, as long as its granularity is greater than described minimum clearance L2, the present invention can both effectively pulverize it as high speed extrusion shearing pulverizer, and material degradation rate (pointing out the pulverized probability of machine material) and crush efficiency (characterizing the speed of comminuting matter) are far above similar size reduction machinery.
The present invention is provided with the special-shaped sawtooth that width strengthens on the wear member 12 of pin, suitably strengthen measures such as pin integral body, special-shaped teeth sizes and can improve tens times to pin service life, even tens times, the pin special circumstances faster of wearing and tearing when making pin (comprising rotor pin 6 and stator pin 5) can adapt to high speed extrusion shearing pulverizer processing high strength material guarantee that the high speed extrusion shearing pulverizes function efficiently running in considerable time.
The research and development explanation:
As stated in the Background Art, the present inventor has found to announce three shortcomings greatly that new technology exists can cause that all purposes of this technology can't realize by advanced development and a large amount of test, and further analyze and research on this basis operation principle of clashing into pulverizing and extrusion shearing disintegrating apparatus and the factor that influences disintegrating apparatus degradation rate and efficient, find out to overcome and announce the new technology shortcoming, realize and obviously surmount the technical scheme of the target of having announced the new technology imagination.Relevant R﹠D work comprises:
(1) according to dynamics collision principle and solid deformation and pulverizing relative theory analysis, all granular solids materials all have the binding energy that can keep its solid shape constant.Only act on external force on this material particles when giving the deformation energy of material particles and surpassing the binding energy of material particles, material particles could be broken, is idle work all just otherwise external force does.Therefore, improving the degradation rate of pulverizer and the effective ways of operating efficiency should be that outer force intensity is brought up to degree that is enough to the broken material particle and the number of times that increases the effect of the material that is enough to the broken material particle.Theory analysis and facts have proved that in a large number the gap is more little between rotor pin 6 and the stator pin 5, the pulverizer degradation rate is high more.Announced new technology attempt to be used in rotor pin 6 be provided with tangential working face angle α be the method for 15 °～35 ° inclined cut and the tangential working face of zigzag increase can the broken material particle effective bump number of times, improve degradation rate, but block with first sawtooth because of the α angle is excessive, the back sawtooth bumps less than material, fails effectively to achieve the goal.The present invention uses following technological means to overcome the shortcoming of announcing new technology, reach the purpose of raising equipment degradation rate: when rotor pin 6 is installed, make the tangential working face 27 of rotor pin and what intersect with it is that the tangent plane angle β on the face of cylinder (A cylinder 52) of center line is 5 °～20 ° with rotor disk 8 axis.
(2) present inventor is creatively according to the detection data analysis of model machine function test and pin abrasion test, not only found to announce the shortcoming of new technology stator pin 5 rapid wears, and recognize announce new technology only with rotor pin 6 wearing and tearing and sawtooth quantity wear and tear be according to analysis and judgement pin service life be incomplete.Correct method should be that rotor pin 6 and stator pin 5 are taken into account and be to analyze foundation with the wear extent.In view of the above, we develop the method that overcomes the shortcoming of announcing that the new technology pin life-span is short and are: the tangential of pin wear member 12 and radially the working face end top width respectively is set than the big at least 2 times special-shaped sawtooth of other common sawtooth 51 tooth bottom width degree.If wearing away 2mm with rotor pin 6 near stator pin 5 place's carbide alloy is the lifetime limitation analysis, because of special-shaped sawtooth 2 times of existing percussion grinder rotor pin 6 hard metal tip thickness, so be the twice of existing percussion grinder rotor pin the service life of pin at least among the present invention, if consider function and the effect and the equal effect that prolongs in 5 service lifes of stator pin of special-shaped sawtooth the place ahead sawtooth, then these data will quadruple at least.
(3) analyze in theory, having extrusion shearing pulverizing function is to have announced a big advantage of new technology.The material particles of rotor pin 6 direct extrusion shearings between rotor pin 6 and stator pin 5 that it has not only been started with high-speed motion reaches the brand-new working method of pulverizing purpose, expanded the disintegrating apparatus scope of application (can be used to pulverize toughness materials such as plastics, rubber), and it is simple in structure according to the present invention, effectively the high and nearly all solid material shear strength of utilization rate of electrical is situation analysis judgements such as about 1/2 of compression strength, and high speed extrusion shearing pulverizer is most effective pulverizer.Yet as described in the background art, test data shows, it is also not ideal enough to have announced that new technology is done the effect that high speed extrusion shearing pulverizer uses.According to model machine function test result, we analyze, during the running of high speed extrusion shearing rotor mill, rotor pin 6 inclined cuts can be clamped with stator pin 5 tangential working faces and be held material particles and it is applied extrusion shearing power, also can apply material particles separately simultaneously and force its proal thrust.Evidence, within the specific limits, rotor pin 6 inclined cuts reduce with tangential working face angle, and the probability that pincers are held material particles increases (performance is that the equipment degradation rate improves), and motive force reduces; Otherwise
Rotor pin 6 inclined cuts and tangential working face angleIncrease, then clamp the probability of holding material particles and reduce, motive force increases.Announced that new technology makees high speed extrusion shearing pulverizer and with the unfavorable one of the main reasons of effect be
Rotor pin 6 inclined cuts and tangential working face angleExcessive, another main cause is to participate in comminution process and have sawtooth that extrusion shearing pulverizes function very little.The present invention has overcome the shortcoming of announcing new technology; Do the function test detection data demonstration that high speed extrusion shearing pulverizer is used by the successful model machine of technical scheme research and development after improving, its degradation rate is than announcing that new technology is high more than 50%.
By dynamics collision principle and disintegrating apparatus principle Analysis, compare with the space bump, big several times at least of the active forces that material particles was subjected to when 5 pairs of pincers of rotor pin 6 and stator pin were held in active force that material particles between the two applies and clash into than the space, even tens times; And apply each all rotor pin 6 of rotor pin 6(of active force) all be and the fixing all-in-one-piece of rotor disk 8, wheel hub 9 and motor 10 rotors that the kinetic energy that each rotor pin 6 has all has the summation equivalence of kinetic energy with all these parts.Compare with the binding energy of any one material particles of any material, the kinetic energy that rotor pin 6 has all almost is infinitely-great.Therefore, it can be asserted that: at the solid material of all materials, as long as its granularity is greater than described minimum clearance L2, as long as pin is continuous, the present invention can both effectively pulverize it as high speed extrusion shearing pulverizer, and material degradation rate (pointing out the pulverized probability of machine material) and crush efficiency (characterizing the speed of comminuting matter) are far above similar size reduction machinery.The present invention's one big advantage beyond doubt applied widely.
What need illustrate especially is: the present invention does high speed extrusion shearing pulverizer usefulness, and during especially for high strength materials such as processing ores, the rate of wear of pin is than fast tens times of the percussion grinder of existing processing wheat, even tens times.So whether pin has sufficiently long service life also is that can decision the present invention do the key condition that high speed extrusion shearing pulverizer uses.Long-term a large amount of practice detects data and shows, uses the corner angle of the percussion grinder rotor pin hard metal tip in 5 years partly to wear away about 1mm in flour mill.Height and the tooth bottom width of having announced sawtooth on the new technology pin wear member all are 1mm.Like this,, announced that the sawtooth use will be polished in 6 months on the new technology rotor pin wear member, then only needed just polish in one month by 60 times of reckonings by fast ten times of reckonings of the high speed extrusion shearing pulverizer pin rate of wear.Obviously, press pin service life and analyze, announced that new technology can not work as high speed extrusion shearing pulverizer and use.The present invention is provided with the special-shaped sawtooth of widening at the top on pin can guarantee 4～10 times of pin life-span raisings.Obviously, above-mentioned measure is enough to guarantee that the present invention can make high speed extrusion shearing pulverizer and use.In addition, be the anti-wear performance best material analysis of adopting in the disintegrating apparatus up to now according to carbide alloy, by pulverizing the examination of equivalent amount material particles, also be the longest the service life of consumable accessory of the present invention.
(4) mainly just had appreciable pulverizing functional analysis by the radially smooth working face bump of rotor pin 6 material particles with the motion of 60m/S linear velocity according to existing percussion grinder, the bump pulverizer improves innovation should not ignore the radially effect of working face bump.By the creativeness analysis, the inventor considers by the bump material particles and moves in smooth flat and take away part kinetic energy, impact strength and effect are reduced, we rotor pin 6 and stator pin 5 major parts radially working face make the standard zigzag into, and (this also is to slow down the pin wearing and tearing all to be provided with a wide especially special-shaped sawtooth in top at both ends, the necessary means that increases the service life), evidence this measure can make degradation rate of the present invention and efficient obviously improve.
Claims (4)
1. have bump pulverizing and extrusion shearing and pulverize the pulverizer of function, comprise motor, casing, rotor part and stator component, motor is fixed on bottom of shell;
Rotor part comprises wheel hub, be fixed on the rotor disk on the wheel hub and be that the center along the circumferential direction evenly distributes and is installed in the circle of at least 3 on rotor disk rotor pin with the axis of rotor disk, and rotor part is positioned at casing and is fixed on the motor shaft by wheel hub;
Stator component comprise cover plate, fixing on the cover board the stator dish and be that the center along the circumferential direction evenly distributes and is installed in the sub-pin of the delineation of at least 3 on the stator dish with the axis of stator dish, stator component is fixed on the casing face by its cover plate;
Described rotor pin is identical with the stator column latch structure, and including cross section is foursquare four prism type steel billet, and steel billet is provided with the coupling part;
The L-shaped wear member in cross section is welded or be bonded with in the adjacent two sides of four prism type steel billet;
It is characterized in that:
Axis with rotor disk is the center, the wear member of described rotor pin and stator pin has the tangential working face that intersects vertically and two working faces of working face radially, the above two working face intersection is a front end with wear member, tangential working face front portion is the standard serrated-surface, and this standard serrated-surface is provided with common sawtooth; The end of tangential working face is provided with one first special-shaped sawtooth, and the top width of this first special-shaped sawtooth is the twice of the anterior common sawtooth tooth bottom width degree of tangential working face at least;
With the imaginary circles cylinder with stator dish or rotor disk coaxial line is the A cylinder, and the tangential working face of stator pin and the angle of A cylinder between the tangent plane at stator column pin axis place that passes this stator column pin axis are α, 5 °≤α≤20 °;
The tangential working face of rotor pin and the angle of A cylinder between the tangent plane at rotor pin axis place that passes this rotor pin axis are β, 5 °≤β≤20 °.
2. the pulverizer with bump pulverizing and extrusion shearing pulverizing function according to claim 1, it is characterized in that: the above two working face intersection is a front end with wear member, the radially working face front portion of the wear member of rotor pin and stator pin is the serrated-surface of standard, and this standard serrated-surface is provided with common sawtooth; Radially the end of working face is provided with one second special-shaped sawtooth, and the top width of this second special-shaped sawtooth is the twice of the anterior common sawtooth tooth bottom width degree of working face radially at least.
3. the pulverizer with bump pulverizing and extrusion shearing pulverizing function according to claim 2, it is characterized in that: described steel billet coupling part is screw rod or polished rod; Described wear member is formed by carbide alloy or the manufacturing of special cermacis class ultra-hard abrasive material.
4. according to claim 3 have that bump is pulverized and extrusion shearing is pulverized the pulverizer of function, it is characterized in that: the first special-shaped sawtooth on the described tangential working face turns round the width of circumferencial direction more than or equal to 4 millimeters along rotor.
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| JP2018534134A (en) * | 2015-11-18 | 2018-11-22 | 洪福 王 | High-speed compression shear crusher |
| WO2021174974A1 (en) * | 2020-03-05 | 2021-09-10 | 郑州鸿力农业科技有限公司 | Multifunctional extruding-shearing machine and applications thereof |
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| CN103223365B (en) | 2014-12-10 |
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