CN114273023A - Ultrafine grinder and material grinding method - Google Patents
Ultrafine grinder and material grinding method Download PDFInfo
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- CN114273023A CN114273023A CN202111644729.9A CN202111644729A CN114273023A CN 114273023 A CN114273023 A CN 114273023A CN 202111644729 A CN202111644729 A CN 202111644729A CN 114273023 A CN114273023 A CN 114273023A
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Abstract
The invention relates to the technical field of material crushing. Super little rubbing crusher, including rubbing crusher structure, rubbing crusher structure includes: the crushing disc is rotatably arranged on the crushing mechanism; the hammer cutter is fixedly connected to the peripheral edge of the crushing disc; the gear ring is fixedly connected to the crushing mechanism, and is matched with the hammer cutter for crushing materials; be provided with on the ring gear and block the piece for block ascending large granule material, and rebound the large granule material the ring gear with the clearance region regrinding between the hammer sword. Above-mentioned rubbing crusher is with solving the technical problem that current superfine rubbing crusher grading efficiency is low. The invention also discloses a material crushing method which is realized by utilizing the ultrafine crusher. The method is used for solving the technical problem that the existing crushing method is low in grading efficiency.
Description
Technical Field
The invention relates to the technical field of material crushing, in particular to an ultrafine crusher and a material crushing method.
Background
The existing ultrafine grinder mainly comprises a feeding mechanism, a grinding mechanism, a grading mechanism and a transmission mechanism. The feeding mechanism is used for controlling the rotating speed of the feeding auger through the variable frequency motor so as to control the feeding amount, and the crushing mechanism is used for crushing large material particles into small particles through the hammer cutter and the gear ring; the grading mechanism is used for separating small particle materials meeting the fineness requirement out of the crushing chamber through the grading wheel and the flow dividing cover, and meanwhile, forcing large particle materials to return to the crushing chamber to continue to be hit by the crushing mechanism; the transmission mechanism comprises a main motor transmission part, a feeding motor transmission part and a grading motor transmission part, wherein the main motor adopts a vertical belt pulley transmission part, the feeding motor adopts a chain wheel transmission part, and the grading motor adopts a direct connection transmission part; the qualified small-particle materials separated out of the crushing chamber are timely conveyed to a material collecting device through pneumatic conveying and are collected.
The coarsely crushed material enters the crushing chamber from the feeder to be crushed. Due to the high-speed rotation of the crushing disc, under the action of centrifugal force, materials are crushed by the impact of the hammer cutter arranged on the crushing disc and are rotated to the peripheral gear ring at a very high speed, and because the clearance between the hammer cutter and the gear ring is very small, the airflow between the hammer cutter and the gear ring is instantaneously changed due to the change of the tooth shape. The material is subjected to alternating stresses in the gap, where it is further comminuted under repeated action. The crushed material is carried to the position between the inner wall and the flow dividing cover by the airflow entering from the lower part of the crushing disc, then enters the grading chamber, the crushed material is graded under the combined action of wind power, gravity and centrifugal force of the grading wheel by adjusting the rotating speed of a motor of the grading wheel and proper parameters of the wind quantity of a fan, the separated coarse material returns to the crushing chamber from an inner cavity of the flow dividing cover to be crushed again, fine material (finished product) is sucked into the grading impeller, enters the discharging chamber and enters the collecting system from a discharging port.
In the actual production process of the ultrafine grinder, the fineness and the yield of the ground finished product material are two most concerned influence factors of customers, and the two variables have a negative correlation relationship. For example, if the fineness of the crushed material is increased (by increasing the rotation speed of the grading wheel or reducing the air volume), the corresponding yield is reduced; the fineness of the crushed materials is reduced (by reducing the rotating speed of a grading wheel or increasing the air quantity), and the corresponding yield is correspondingly increased; and through promoting crushing efficiency, under the prerequisite of guaranteeing that the material fineness satisfies the requirement, improve the material yield after smashing and be the important means of measuring equipment and improving product market competition.
The technical problem that current superfine rubbing crusher exists is: thick and thin material particles can form material circulation in the crushing chamber along with the high-speed rotation of the crushing disc, and due to the fact that different centrifugal force sizes can cause layering in the running track in the crushing chamber, large particles are on the outer side, small particles are on the inner side, the moving track prevents the probability that the small particle materials meeting the requirements pass through the grading wheel, and discharging efficiency is reduced.
Disclosure of Invention
The invention aims to provide an ultrafine grinder, which is used for solving the technical problems of low grinding efficiency and low grading efficiency of the existing ultrafine grinder.
In order to solve the technical problem, the invention adopts the following technical scheme that the ultrafine grinder comprises a grinding mechanism, wherein the grinding mechanism comprises:
the crushing disc is rotatably arranged on the crushing mechanism;
the hammer cutter is fixedly connected to the peripheral edge of the crushing disc;
the gear ring is fixedly connected to the crushing mechanism, and is matched with the hammer cutter for crushing materials; be provided with on the ring gear and block the piece for block ascending large granule material, and rebound the large granule material the ring gear with the clearance region regrinding between the hammer sword.
According to the invention, the blocking piece is arranged on the tooth ring of the crushing part of the ultrafine crusher, so that large-particle materials on the outer side of material circulation are blocked and returned to the tooth ring and the hammer blade area for secondary crushing, the opportunity of repeatedly crushing coarse materials is increased, and the crushing effect of the crusher is improved; the reduction reaches the outlying large granule quantity of classifying wheel, plays the prescreening effect, promotes rubbing crusher's classification efficiency.
The gear ring has the effect of one-time screening, blocks large-particle materials before the materials reach the grading mechanism, reduces the number of the large particles reaching the periphery of the grading wheel, increases the grading efficiency of the grading wheel, enables unqualified large-particle materials to obtain multiple crushing opportunities before the materials enter the grading wheel, and ensures the quality of crushed finished products.
In order to solve the technical problem of low crushing efficiency of the crusher, the invention adopts the following technical scheme that the hammer cutter comprises:
the hammer knife impact surface is arranged on the end surface of the hammer knife along the circumferential direction of the crushing disc and is used for crushing materials between the adjacent hammer knives;
the hammer cutter outer side teeth are arranged on the outer side of the hammer cutter and are used for colliding and crushing materials between the hammer cutter and the gear ring;
the hammer cutter inner side teeth are arranged on the inner side of the hammer cutter and are used for crushing materials on the inner side of the hammer cutter.
According to the technical scheme of the hammer cutter, the crushing form is added, the crushing range is expanded, the material circulation layer formed in the gear ring can be hit by the crushing mechanism, and the working efficiency of the crusher is improved.
In order to solve the technical problem of low crushing efficiency of the crusher, the invention adopts the following technical scheme, and is characterized in that the hammer cutter further comprises:
and the striking column is arranged on the hammer cutter along the axial direction of the crushing disc. The striking column is matched with the gear ring and is used for crushing materials higher than the hammer cutter.
According to the invention, the hammer cutter positioning hole is matched with the mounting striking column, so that the collision area and height are increased, and the crushing efficiency of the crusher is increased.
In order to further solve the technical problem of the crushing efficiency of the crusher, the invention adopts the following technical scheme that the impact surface of the hammer cutter is in a grid shape, and the impact surface of the hammer cutter is provided with a convex part and a concave part for rubbing and crushing materials.
According to the invention, the impact surface of the hammer cutter of the crushing component of the ultrafine crusher is made into a latticed rough surface, so that collision crushing is changed into two crushing modes of collision and friction, and the crushing efficiency of the crusher is improved.
In order to solve the technical problems, the invention adopts the following technical scheme that the crushing device further comprises a grading mechanism, the grading mechanism is arranged above the crushing disc, the crushing mechanism further comprises a flow dividing cover, and a feed inlet baffle plate is arranged at a feed inlet of the flow dividing cover and used for preventing feed from directly entering the grading mechanism, preventing the feed from directly entering a grading wheel area and improving the crushing effect.
The flow dividing cover reduces large-particle materials which enter the grading wheel without being crushed, improves the flowing speed of the materials in the crushing chamber, accelerates the secondary crushing circulation process, destroys the circulation layer of the secondarily crushed materials and enhances the secondary crushing effect.
In order to solve the technical problem that the discharging speed of the pulverizer is not ideal, the invention adopts the following technical scheme that the flow dividing cover comprises an outer ring and a conical cover, the outer ring is connected with the conical cover through inclined rib plates, and the inclined rib plates are arranged in a spiral direction along the rotating direction of the pulverizer and used for guiding materials to the grading mechanism.
The angle of the rib plate on the outer ring of the flow dividing cover is inclined, the inclination direction is consistent with the material trend, the material fluidity is enhanced, the crushing-grading-discharging time is shortened, and the discharging speed of the crusher is improved.
In order to further solve the technical problem of low crushing efficiency of the crusher, the invention adopts the following technical scheme that the inner side of the flow dividing cover is provided with the vertical rib plate to damage a circulation layer of the re-crushed material and improve the crushing effect of the crushing part.
In order to further solve the technical problem of low crushing efficiency of the crusher, the invention adopts the following technical scheme that an obliquely arranged airflow channel is formed between the crushing disc and the gear ring and used for guiding external airflow and blowing materials to the hammer cutter.
According to the invention, the gap between the gear ring and the crushing disc is designed to pass through the inclined airflow channel of the hammer cutter, so that the length of the passing airflow is prolonged, the passing time of the airflow is prolonged, and the retention time of the material in the crushing area is increased, thereby increasing the chance of the material impacting the hammer cutter and improving the crushing effect.
In order to further solve the technical problem of low crushing efficiency of the crusher, the invention adopts the following technical scheme that the upper circumferential edge of the crushing disc is provided with a flow guide part, and the flow guide part is used for guiding the materials on the crushing disc to the impact surface of the hammer cutter.
Under the action of centrifugal force, the material flows to the hammer cutter and the gear ring area, the flow guide piece can impact the material and guide the material to flow, so that the material is collided to the main crushing surface of the hammer cutter, the utilization rate of the hammer cutter is improved, and the crushing effect is enhanced. In addition, the high-speed moving flow guide piece has a strong shearing effect on the materials, so that turbulence and material flow are generated in the original material circulation area, a circulation layer is damaged, the retention time of the materials in a hammer cutter area is prolonged, and the crushing efficiency is increased.
The second purpose of the invention is to provide a material crushing method, which aims to solve the technical problem that the classification efficiency of the existing crushing method is low.
In order to solve the technical problems, the invention adopts the following technical scheme that a material crushing method is realized by using any one of the ultrafine crushers;
the materials enter the crushing mechanism, and the matched gear ring and the hammer cutter are utilized to crush the materials;
the crushing disc rotates to generate centrifugal force, crushed materials are thrown to the gear ring under the action of the centrifugal force, a material circulation layer is formed between the gear ring and the hammer cutter, large-particle materials are close to the gear ring, and small-particle materials are far away from the gear ring;
large granular materials close to the gear ring ascend under the action of ascending air flow and rebound back to a position between the gear ring and the hammer cutter for secondary crushing after being blocked by the gear ring blocking piece;
small particle materials far away from the gear ring are guided by the ascending airflow to upwards enter the grading mechanism through the inclined rib plate, and qualified particles are screened out through the grading mechanism; unqualified materials are screened by the grading mechanism, fall onto the crushing disc and are guided by the guide piece to the impact surface of the hammer cutter for crushing again.
According to the crushing method disclosed by the invention, in the process of crushing the materials, the hammer cutter is larger in crushing range and stronger in crushing effect, large-particle materials are more difficult to enter the grading wheel, the grading efficiency is higher, the flowability of the crushed materials in the crushing chamber is stronger, the discharging of qualified materials is quicker, the secondary crushing cycle period of unqualified materials is shorter, the efficiency is higher, and the yield of qualified materials meeting the requirements in the same time is higher.
Drawings
FIG. 1 is a schematic view showing the external structure of an ultrafine pulverizer of the present invention;
FIG. 2 is a sectional view of the ultrafine pulverizer of the present invention;
FIG. 3 is a perspective view of a pulverizing disk of the ultrafine pulverizer of the present invention;
FIG. 4 is a plan view of a pulverizing disk of the ultrafine pulverizer of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a schematic view of a gear ring structure of the ultrafine grinder of the present invention;
FIG. 7 is a schematic structural view of a flow distribution cover of the ultrafine grinder of the invention;
FIG. 8 is a schematic view of the connection structure of the pulverizing disk, the gear ring and the hammer blade of the ultrafine pulverizer of the present invention;
fig. 9 is an enlarged view of a portion B in fig. 8.
Detailed Description
Example 1
As shown in FIGS. 1 and 2, the ultrafine grinder of the present invention comprises a feeding mechanism 1, a grinding mechanism 2, a classifying mechanism 3 and a transmission mechanism 4.
The crushing mechanism comprises a crushing chamber 27, a crushing disk 20, a hammer knife 21 and a gear ring 22.
The shredder plate 20 is mounted on the upper end of the shredder mechanism main shaft and is rotatable at high speed with the main shaft. The hammer blades 21 are screwed to the peripheral edge of the grating disk 20.
As shown in fig. 2, 6, 8 and 9, the gear ring 22 is fixed on the inner wall of the crushing chamber 27, the gear ring 22 comprises a tooth ridge 221 and an upper retaining edge 222, and the upper retaining edge 222 forms a barrier for blocking the ascending large granular materials and rebounding the large granular materials to the gap area between the gear ring and the hammer knife for secondary crushing. A gap is formed between the hammer cutter 21 and the gear ring 22, and ascending air flow is blown upwards from an air inlet of a purification air chamber at the lower part of the crushing chamber.
The working principle is as follows: the shredder plate 21 rotates at high speed, driving the air stream and material to rotate at high speed. The materials move outwards under the action of centrifugal force and updraft, a material circulation layer is formed between the gear ring 22 and the hammer cutter 21, the materials with large mass are arranged on the outer side, the materials with small mass are arranged on the inner side, and the crushed materials have a radial layering effect. The part closest to the gear ring 22 is the outermost mass particles, the particle diameter of the outermost mass particles is larger than the standard, the particles ascend under the action of ascending air flow, are blocked by the upper baffle edge 222 and then rebound to the gear ring 22 and the hammer blade 21 area, and are crushed again, so that large-particle materials are crushed for multiple times. The material in the area not covered by the upper rim 222, which has a smaller relative diameter, enters the classifier wheel directly under the effect of the ascending gas flow. Through the effect of flange 222 on the ring gear, make the regional large granule material of reaching the classifying wheel reduce, increase hierarchical efficiency.
Example 2
The main crushing form of the single hammer cutter of the existing ultrafine crusher depends on the impact effect, the impact frequency and the impact area are limited, the overall distribution positions of the hammer cutters are fixed, and the crushing disk surface has no other crushing structures, so that the crushing work efficiency is limited.
In order to solve the above technical problems, the improved structure of the hammer blade of the ultrafine pulverizer is improved, as shown in fig. 2, 3, 4, and 5, the hammer blade 21 includes a hammer blade impact surface 211, hammer blade outer side teeth 212, and hammer blade inner side teeth 213.
The hammer blade impact surface 211 is arranged on the end surface of the hammer blade 21 along the circumferential direction of the crushing disk and is used for crushing materials between the adjacent hammer blades 21.
The hammer blade outer teeth 212 are provided on the outer side of the hammer blade 21 for collision crushing of the material between the hammer blade 21 and the ring gear 22.
The hammer blade inner side teeth 213 are arranged on the inner side of the hammer blade 21 and are used for crushing materials on the inner side of the hammer blade.
The inner corners of the striking surface 211, the outer teeth 212 and the inner teeth 213 of the hammer blade are made of alloy materials and are fixed on the hammer blade 1 by welding.
When the material gets into the superfine grinding room 5, it is regional to drop the hammer sword below the feed inlet, and partly material falls on hammer sword 21, directly smashes with the collision of the hammer sword striking face 211 of high-speed rotation, and partly material gets into the hammer sword 21 inboard, and the material is got rid of outward under the effect of centrifugal force, collides with hammer sword inboard tooth 213 and smashes. The materials are driven by centrifugal force and air flow to rotate at high speed and are thrown to the gear ring 22 area on the wall of the crushing cavity to form material circulation with the height equivalent to that of the gear ring 22, and the materials between the hammer cutter 21 and the gear ring 22 collide with the teeth 212 on the outer side of the hammer cutter to be crushed.
The impact surface 211 of the hammer cutter is in a grid shape and has bulges and depressions, the friction coefficient is larger, and the materials have a friction function besides a collision function. The material is smashed through collision and two kinds of effects of friction, has promoted crushing efficiency. And because of the latticed impact surface, the surface area is increased, the retention time of the materials on the impact surface is increased, the action time of friction is further increased, and the crushing effect is improved.
The outer teeth 212 and the inner teeth 213 of the hammer blade are added on the two sides of the hammer blade. The outer teeth 212 and the inner teeth 213 of the hammer blade further shear and crush the materials impacted on the impact surface 211 of the hammer blade.
The outer teeth 212 and the inner teeth 213 of the hammer cutter are inclined upwards to guide the velocity vector of the material in the upward direction to increase, so that the material can flow into a grading area easily, and the flow of the material is accelerated.
The material after smashing is got rid of under the effect of centrifugal force to the ring gear region of smashing the chamber wall, and under the drive of the air current that makes progress, the material upwards enters into the classification wheel region, screens out the qualified granule of footpath grain through the classification wheel, gets into again crushing regional recirculation and smashes once more the unqualified granule of footpath grain.
Example 3
Among the current superfine rubbing crusher: the material forms material circulation at the height of the existing gear ring, and because the height of the hammer cutter is lower than that of the gear ring, only the lower layer part of the material circulation is impacted by the hammer cutter for many times. The part of the upper part of the material circulation, which is higher than the height of the hammer knife, idles and is not impacted by the hammer knife, so that the crushing efficiency is reduced.
In order to solve the above technical problems, the structure of the hammer blade of the ultrafine pulverizer of embodiment 2 is further improved, as shown in fig. 2, 3, 4, and 5, a striking column 214 is additionally provided on the upper end surface of the hammer blade, specifically: the upper end surface of the hammer cutter is provided with a large countersunk hole, a striking column 214 is arranged in the large countersunk hole, and the striking column is fixed on the crushing disc 20 through threaded connection. The striking cylinders 214 are axially disposed along the shredder plate 20. The striking pin 214 cooperates with the gear ring 22 for crushing material above the height of the hammer blade.
When the material gets into the superfine grinding chamber 27, drop the hammer sword region of feed inlet below, partly material falls on hammer sword 21, directly smashes with the collision of high-speed rotatory hammer sword striking face 211 and striking post 214, and partly material gets into hammer sword 21 inboard, and the material is got rid of outward under the effect of centrifugal force, and the collision is smashed with hammer sword inboard tooth 13. The materials are driven by centrifugal force and air flow to rotate at high speed and are thrown to the gear ring 22 area on the wall of the crushing cavity to form a material circulation with the height equivalent to that of the gear ring 22, and the materials between the hammer cutter 21 and the gear ring 22 collide with the teeth 212 on the outer side of the hammer cutter to be crushed.
Example 4
Among the current superfine rubbing crusher: part of the materials which just enter the crushing chamber directly enter the grading wheel region without passing through the hammer knife crushing region or only through primary crushing under the action of the ascending air flow in the gap between the gear ring and the hammer knife, so that the screening burden of the grading wheel is increased, and the whole crushing efficiency is reduced. Before the materials are guided by the flow dividing cover to enter the grading wheel, part of the materials are blocked by the vertical rib plates between the inner ring and the outer ring of the flow dividing cover, and accumulated materials are formed at the rib plates, so that the flowability of the materials is influenced, and the crushing yield is reduced.
In order to solve the above technical problem, the structure of the flow dividing cover of the ultrafine pulverizer is improved, as shown in fig. 2 and 7, the flow dividing cover 24 includes an outer ring 240 and a conical cover 241. The flow distribution cover 24 is fixed to the pulverization chamber by a fixing cylinder 246.
The outer ring 240 is provided with a feeding hole 2401. Two sides of the feed inlet are provided with feed inlet baffles 242, a feed inlet clapboard 243 is fixedly connected between the two feed inlet baffles 242, and the feed inlet clapboard 243 and the feed inlet baffles 242 form an inverted U-shaped or H-shaped structure.
An inclined rib plate 244 is connected between the outer ring 240 and the conical cover 241. The inclined rib plates 244 are arranged spirally upward in the rotation direction of the crushing disc 20 for guiding the material to the classifying mechanism. The inclined rib plates 244 have a guiding function, and the inclined rising angle of the inclined rib plates 244 is consistent with the flowing direction of the material flow driven by the crushing disc 20. Vertical rib plates 245 are distributed on the inner side of the conical cover 241 along the circumferential direction.
The working principle is as follows: the feed inlet baffle 242 prevents un-pulverized materials in the pulverizing chamber which just enters from being directly brought into the classifying wheel area by the action of ascending air flow, and the feed inlet baffle 243 ensures that the materials fall into the effective pulverizing interval of the hammer cutter 21 on the pulverizing disc 20 after entering the pulverizing chamber, so that the materials are reduced from falling into other areas without pulverizing structures, and the pulverizing efficiency is increased; the materials crushed by the gear ring 22 of the hammer cutter 21 obliquely rise along the inclined rib plate 244 on the outer side of the conical cover 241, so that the fluidity of the materials in the crushing chamber is increased, the resistance is reduced, the circulating speed of crushing, shunting, grading and re-crushing is accelerated, the times of beating and striking the materials are increased within the same time, and the crushing efficiency is increased; unqualified large-particle materials which do not pass through the grading wheel flow downwards along the downward flow guide surface in a spiral mode through the inner side of the flow dividing cover to return to the crushing disc 20 again for secondary crushing, the vertical rib plates 245 distributed on the circumference of the inner side of the conical cover damage a circulation layer formed by secondary crushed materials, the speed difference between the secondary crushed materials and the hammer cutter rotating at a high speed is improved, and the striking collision effect of the hammer cutter on the materials is improved.
Example 5
As shown in fig. 2, 8 and 9, the ring gear 22 is fixed to the inner wall of the crushing chamber 27, the hammer blade 21 is fixed to the crushing disk 20, the longitudinal section of the crushing disk 20 is trapezoidal, and the ring gear is provided with an annular wedge. There is a gap between the grating disk 20 and the ring gear 22, forming an air flow channel 26, from which air flow channel 26 the ascending air of the clean air chamber is blown. The air flow channel 26 is an inclined channel opening, and the air outlet angle faces the direction of the hammer blade. In addition, the guide strips 25 are arranged and fixed on the crushing disc 20, the number of the guide strips 25 is 2-3, and the direction of the guide strips 25 points to the impact surface 211 of the hammer cutter.
The working principle is as follows: an air flow channel 26 is obliquely arranged between the gear ring 22 and the crushing disc 20, the air flow channel 26 is connected with an air supplementing opening, and the air supplementing quantity simultaneously drives materials to upwards enter a classifying wheel area. The air flow channel 26 is here inwardly inclined, the outlet facing the hammer blade 21. The air flow is changed from the traditional vertical upward direction to the inclined upward direction, and the materials are blown to the hammer blade 21 to be crushed again. The whole air flow inclines upwards, so that the chance of the materials impacting the hammer cutter is increased, and meanwhile, the ascending air flow path is lengthened, so that the retention time of the materials in a crushing area is lengthened, and the chance of collision crushing of the materials and the hammer cutter is increased. The crushing of material is to going into the classification region to last, and the large granule that the granularity is unqualified falls back crushing dish, and to hammer sword 21 and the regional flow of ring gear 22 under the centrifugal force effect, water conservancy diversion strip 25 can strike the material to guide the material flow direction, make the material hit to hammer sword main crushing face, improve hammer sword utilization ratio and reinforcing crushing effect. In addition, the diversion strips 25 moving at high speed generate strong shearing action on the materials, so that turbulence and material flow are generated in the original material circulation area, a circulation layer is damaged, the retention time of the materials in a hammer cutter area is prolonged, and the crushing efficiency is increased.
Claims (10)
1. Super little rubbing crusher, including rubbing crusher structure, characterized by includes:
the crushing disc is rotatably arranged on the crushing mechanism;
the hammer cutter is fixedly connected to the peripheral edge of the crushing disc;
the gear ring is fixedly connected to the crushing mechanism, and is matched with the hammer cutter for crushing materials; be provided with on the ring gear and block the piece for block ascending large granule material, and rebound the large granule material the ring gear with the clearance region regrinding between the hammer sword.
2. The ultrafine pulverizer as claimed in claim 1, wherein the hammer blade includes:
the hammer knife impact surface is arranged on the end surface of the hammer knife along the circumferential direction of the crushing disc and is used for crushing materials between the adjacent hammer knives;
the hammer cutter outer side teeth are arranged on the outer side of the hammer cutter and are used for colliding and crushing materials between the hammer cutter and the gear ring;
the hammer cutter inner side teeth are arranged on the inner side of the hammer cutter and are used for crushing materials on the inner side of the hammer cutter.
3. The micronizer of claim 2, wherein said hammer blade further comprises:
and the striking column is arranged on the hammer cutter along the axial direction of the crushing disc.
4. The ultrafine pulverizer as claimed in claim 2 or 3, wherein the impact surface of the hammer blade is in a grid shape, and the impact surface of the hammer blade is provided with protrusions and recesses for rubbing and pulverizing the material.
5. The ultrafine grinder of claim 1, further comprising a grading mechanism, wherein the grading mechanism is disposed above the grinding plate, the grinding mechanism further comprises a flow distribution cover, and a feed inlet of the flow distribution cover is provided with a feed inlet clapboard for preventing feed from directly entering the grading mechanism.
6. A micronizer according to claim 5, characterized in that said cage comprises an outer ring and a conical cage, said outer ring and said conical cage being connected by inclined ribs configured to be arranged spirally upwards along the rotation direction of the micronizer disc for guiding the material towards said classifying means.
7. The ultrafine grinder according to claim 5, wherein vertical ribs are provided inside the flow dividing cover.
8. The ultrafine grinder as claimed in claim 1, wherein an air flow passage is formed between the grinding disk and the ring gear, and is arranged to guide an external air flow and blow the material toward the hammer blade.
9. The micronizer of claim 1 wherein said disk is provided with a deflector at its upper peripheral edge for directing material on said disk against said impact surface of said hammer.
10. A method for pulverizing a material, characterized by comprising the step of using the ultrafine pulverizer as defined in any one of claims 1 to 9; the method comprises the following steps:
the materials enter the crushing mechanism, and the matched gear ring and the hammer cutter are utilized to crush the materials;
the crushing disc rotates to generate centrifugal force, crushed materials are thrown to the gear ring under the action of the centrifugal force, a material circulation layer is formed between the gear ring and the hammer cutter, large-particle materials are close to the gear ring, and small-particle materials are far away from the gear ring;
large granular materials close to the gear ring ascend under the action of ascending air flow and rebound back to a position between the gear ring and the hammer cutter for secondary crushing after being blocked by the gear ring blocking piece;
small particle materials far away from the gear ring are guided by the ascending airflow to upwards enter the grading mechanism through the inclined rib plate, and qualified particles are screened out through the grading mechanism; unqualified materials are screened by the grading mechanism, fall onto the crushing disc and are guided by the guide piece to the impact surface of the hammer cutter for crushing again.
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| CN202111644729.9A CN114273023B (en) | 2021-12-30 | 2021-12-30 | Superfine pulverizer and material pulverizing method |
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| CN202111644729.9A CN114273023B (en) | 2021-12-30 | 2021-12-30 | Superfine pulverizer and material pulverizing method |
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| CN114273023B CN114273023B (en) | 2023-10-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115069356A (en) * | 2022-06-17 | 2022-09-20 | 江苏邦鼎科技有限公司 | Multi-crushing ultrafine grinder |
| CN116618150A (en) * | 2023-07-25 | 2023-08-22 | 哈尔滨瀚邦医疗科技有限公司 | Jet mill for preparing biological hemostatic material |
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Cited By (4)
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| CN115069356A (en) * | 2022-06-17 | 2022-09-20 | 江苏邦鼎科技有限公司 | Multi-crushing ultrafine grinder |
| CN115069356B (en) * | 2022-06-17 | 2023-10-24 | 江苏邦鼎科技有限公司 | Superfine pulverizer with multiple crushing functions |
| CN116618150A (en) * | 2023-07-25 | 2023-08-22 | 哈尔滨瀚邦医疗科技有限公司 | Jet mill for preparing biological hemostatic material |
| CN116618150B (en) * | 2023-07-25 | 2023-10-13 | 哈尔滨瀚邦医疗科技有限公司 | Jet mill for preparing biological hemostatic material |
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