CN117358382A - Fine-granularity abrasive air flow crushing device and method with adjustable particle shape - Google Patents
Fine-granularity abrasive air flow crushing device and method with adjustable particle shape Download PDFInfo
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- CN117358382A CN117358382A CN202311232133.7A CN202311232133A CN117358382A CN 117358382 A CN117358382 A CN 117358382A CN 202311232133 A CN202311232133 A CN 202311232133A CN 117358382 A CN117358382 A CN 117358382A
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- 239000002245 particle Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 93
- 239000000843 powder Substances 0.000 claims abstract description 32
- 238000010008 shearing Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000010419 fine particle Substances 0.000 claims description 8
- 239000011229 interlayer Substances 0.000 claims description 7
- 239000011362 coarse particle Substances 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 5
- 238000010924 continuous production Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 22
- 238000000227 grinding Methods 0.000 description 18
- 229910003460 diamond Inorganic materials 0.000 description 11
- 239000010432 diamond Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- 239000002994 raw material Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary 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
- B02C23/02—Feeding devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a particle shape adjustable fine grain abrasive air flow crushing device and a method, wherein a vortex type crusher and a cyclone separator connected with the vortex type crusher through a material pipe are arranged, a compressed air source is introduced into the front end of the vortex type crusher, the vortex type crusher is arranged into a closed cavity, the compressed air source is tangentially intersected with the inner wall of the cavity through a tangential nozzle to form high-speed vortex air flow, the high-speed vortex air flow is used for driving a crushed material to be thrown into the cavity to perform high-speed centrifugal rotary motion, the crushed material is crushed through repeated collision, friction and shearing, the crushed material can move to a powder collecting device under the action of central vortex lifting air flow, mechanical members are not arranged in the cavity, and the material crushing is completed by means of mutual collision, so that zero loss of a material crushing processing device part is realized.
Description
Technical Field
The invention belongs to the technical field of grinding material crushing, and particularly relates to a fine-granularity grinding material airflow crushing device and method with adjustable particle shape.
Background
With the continuous development of the technical requirements of the production process, the application of the superfine granularity raw materials in the industries of new materials, biology, pharmacy, chemical industry, smelting and the like is increasingly prominent. The micro powder crusher is an indispensable device in the ultra-fine particle size powder production industry and is continuously innovated, and is mainly divided into two types of mechanical ball milling type devices and airflow impact type devices at present. The jet mill is more a widely applied type of superfine pulverizer, and has the advantages of finer granularity and higher processing production efficiency compared with ball milling, but the traditional jet mill process adopts mutual impact grinding among particles, so that the particles are extremely easy to cause passivation development of particle-shaped circles along with the lengthening of jet mill time, and even can reach nearly spherical shape, and the abrasive has no edges and corners, greatly reduces cutting capability and is unfavorable for high-efficiency high-precision grinding application. The air flow mill equipment is adopted, the abrasive particles are driven by high-speed air flow to impact the crushing target at a high speed to realize brittle impact crushing, so that the abrasive particles can obtain more edges and corners, but the existing target air flow mill pulverizing equipment and process mostly adopt a single-stage impact target, and the problems of uncontrollable shape of crushed particles, rapid abrasion of a target body, low production efficiency and the like exist.
The abrasive is used as a key raw material in the grinding wheel production process, the amount of the abrasive is large in the grinding wheel production and manufacturing process, the influence on the performance of the ceramic bond grinding wheel is large, and the fine control of the appearance shape and the granularity size of the abrasive is a key factor for the quality and the performance stability of the ceramic grinding wheel product. At present, diamond micropowder particles are produced by adopting a jaw crusher to crush and then sorting, the particle size distribution range is large, the controllability is poor, more byproducts except the target particle size are produced, the effective utilization rate of raw materials is low, and the production efficiency is low.
The invention of bulletin No. CN1309481C discloses a throwing vortex ultrafine grinder, which is technically characterized by comprising a machine base, a machine body, a main shaft, a grinding chamber, a feed inlet, a speed regulating wheel, a grading guide cone, a material dividing plate, a throwing block and a motor, wherein the machine base is fixedly connected with the main shaft, the main shaft is connected with a fan blade and a throwing disc, a frustum-shaped powder cavity is arranged above the throwing disc, a grading cavity is arranged on the powder cavity, the grading guide cone and the grading blade are arranged in the cavity, the grading guide cone and the grading blade are connected with a rotating shaft, the rotating shaft is connected with the speed regulating wheel through a main shaft wheel of the grading machine, the discharge outlet is arranged right above the grading guide cone, and the feed inlet is inserted in the center of the throwing disc through the powder cavity; the material distributing plate and the material throwing block are arranged on the throwing disc, the grading cavity, the powder cavity and the grinding chamber are all airtight, and materials of the grading cavity, the powder cavity and the grinding chamber are ground and crushed mainly through mutual self-grinding of the throwing disc and the materials returned by the throwing disc and the throwing liner plate, so that the regulation and control of the crushed particle shape of the powder cannot be realized.
At present, a novel processing device and a novel processing method aiming at grinding material crushing processing are urgently needed, effective control of the size and the particle shape of the crushed grinding material is realized, and the processing efficiency and the raw material utilization rate of the production process are improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a fine-granularity abrasive air flow crushing device and method with adjustable particle shape, which can be used for preparing micro powder particles such as diamond abrasive with different granularity sizes and different particle shape characteristics, realizing the regulation and control of crushing particle shape of powder and improving the processing efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the fine-grain abrasive air flow crushing device with adjustable particle shape comprises a vortex type crusher and a cyclone separator connected with the vortex type crusher through a material pipe, wherein a compressed air source is introduced into the front end of the vortex type crusher, and a hopper for feeding is communicated with the upper part of the vortex type crusher;
the vortex type pulverizer comprises a machine body and a bottom plate machine seat detachably connected with the machine body, wherein an empty cavity is formed in the machine body, and the upper end face of the bottom plate machine seat positioned in the cavity is provided with a fin-shaped baffle or a conical plate;
the machine body is sequentially provided with a main air inlet, an annular air inlet channel communicated with the main air inlet and a plurality of branch air vents communicated with the annular air inlet channel from outside to inside, the two side walls of the machine body are respectively provided with the main air inlet and are connected with a compressed air source, and the plurality of branch air vents are distributed along the tangential direction and are communicated with the cavity;
an outlet adjusting pipe is further arranged at the inlet of the connection of the material pipe and the machine body, and the vertical distance between the outlet adjusting pipe and the base plate machine seat is adjustable.
The fin-shaped baffles on the base plate machine seat are arranged at intervals, and the inclination angle of the fin-shaped baffles is 10-30 degrees.
The junction of material pipe and export regulation pipe still is equipped with the access mouth of conical surface formula, and the access mouth sets up along advancing direction narrowing.
The outlet adjusting pipes are vertically distributed, and the conical surface type access ports are fixedly arranged on the inner wall of the outlet adjusting pipes and are vertically adjustable with the outlet adjusting pipes.
The cone angle of the conical plate on the base plate machine seat is 60-120 degrees.
And a feeding regulating valve is also arranged at the inlet of the hopper and the machine body.
And a damping interlayer is arranged between the shell and the cavity.
The cyclone separator is also provided with a dust removing device.
The device and the method for crushing the fine-grained abrasive air flow with adjustable particle shape are characterized by comprising the following steps:
(1) Firstly, adding materials to be crushed into a hopper, adjusting the vertical distance between an outlet adjusting pipe and a base plate machine seat, then introducing compressed gas into a vortex crusher, and forming supersonic vortex airflow by the compressed gas through a tangential nozzle;
(2) Opening a feeding regulating valve below the hopper, so that vortex airflow formed by compressed gas drives the input crushing materials to do high-speed centrifugal rotary motion, and crushing the materials through repeated collision, friction and shearing;
(3) The crushed materials move to a powder collecting device under the action of central vortex lifting airflow, and fine particles meeting the granularity requirement enter a cyclone separator through a ventilation pipe to be collected;
and coarse particles continue to move in the crushing area and continuously impact and rub to crush, so that high-efficiency continuous production of material crushing is realized.
The beneficial effects of the invention are as follows:
(1) The invention discloses a particle shape adjustable fine grain abrasive air flow crushing device and a method, wherein a vortex type crusher and a cyclone separator connected with the vortex type crusher through a material pipe are arranged, a compressed air source is introduced into the front end of the vortex type crusher, the vortex type crusher is arranged into a closed cavity, the compressed air source is tangentially intersected with the inner wall of the cavity through a tangential nozzle to form high-speed vortex air flow, the high-speed vortex air flow is used for driving a crushed material to be thrown into the cavity to perform high-speed centrifugal rotary motion, the crushed material is crushed through repeated collision, friction and shearing, the crushed material can move to a powder collecting device under the action of central vortex lifting air flow, mechanical members are not arranged in the cavity, and the material crushing is completed by means of mutual collision, so that zero loss of a material crushing processing device part is realized.
(2) The base plate machine seat is of a detachable replacement structure, fin-shaped baffle plates, guide cones and other structures are arranged at the centers of different types of base plates, and specific crushed material characteristics can be realized by replacing different types of base plates, so that crushed material particle shapes such as multi-edge angles, muddy circles and the like are obtained; meanwhile, the detachable base plate machine seat can conveniently clean the inside of the cavity of the pulverizer, and is convenient for the adjusting equipment to pulverize different materials.
(3) The outlet adjusting pipe at the inlet of the material pipe and the machine body is vertically adjustable, and synchronously drives the conical surface type inlet to move, so that the size of the interval between the reverse thrust conical surface of the inlet and the outlet is adjusted, the coarse and fine selection can be realized, and fine particles meeting the granularity requirement enter the cyclone separator through the ventilation material pipe to be collected; coarse particles continue to move in the crushing area and are continuously impacted and rubbed to crush, so that high-efficiency continuous production of material crushing is realized.
(4) Through the mutual cooperation of compressed air pressure, flow and outlet space size parameters, the accurate adjustment and control of the crushing granularity size and the crushing efficiency can be realized.
(5) A damping interlayer is further arranged between the shell of the machine body and the inner container of the cavity body and used for absorbing vibration and noise generated by mutual impact of broken materials and friction with the inner wall, and environment-friendly production can be realized.
(6) The main air inlets are arranged at a plurality of positions and are uniformly arranged, so that the uniformity of the air inflow of the nozzles at all positions is ensured; the equipment can use various compressed gases such as compressed air, compressed nitrogen and the like as air sources, and can be selected according to the requirements of crushed materials.
(7) The particle size and the shape of the diamond abrasive are adjustable and controllable, and micro powder with the particle size ranging from 2 um to 200um can be produced; the particle shape of the prepared micro powder material can be regulated and controlled, the regulation and preparation of multi-blade particle shape, equal product shape and even nearly spherical particle shape can be realized, and the particle size concentration is high; the grinding material can be crushed and processed with high efficiency to produce micro powder grinding material with the efficiency more than 1Kg/h; the production process has the advantages of less equipment consumption, no pollution, energy conservation and environmental protection, and is particularly suitable for the crushing production of superfine powder materials such as abrasive materials, ceramic bond and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the vortex mill of example 1;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a perspective view of a fin baffle;
FIG. 5 is a front view of a fin baffle;
FIG. 6 is a schematic cross-sectional view of the vortex mill of example 2;
FIG. 7 is a cross-sectional view taken along A-A of FIG. 6;
FIG. 8 is a perspective view of a tapered plate;
FIG. 9 is a front view of the tapered plate;
FIG. 10 is a microstructure of crushed materials of example 1;
FIG. 11 is a microstructure of crushed material of example 2.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
The invention provides a fine-grain abrasive air flow crushing device and method with adjustable particle shape, as shown in fig. 1 to 11.
The fine-grain abrasive air flow crushing device with adjustable particle shape comprises a vortex type crusher and a cyclone separator connected with the vortex type crusher through a material pipe, wherein a compressed air source is introduced into the front end of the vortex type crusher, and a hopper for feeding is communicated with the upper part of the vortex type crusher; the vortex type pulverizer comprises a machine body and a bottom plate machine seat detachably connected with the machine body, wherein an empty cavity is formed in the machine body, and the upper end face of the bottom plate machine seat positioned in the cavity is provided with a fin-shaped baffle or a conical plate.
The machine body is provided with a main air inlet 7, an annular air inlet channel 71 communicated with the main air inlet 7 and a plurality of branch air vents 13 communicated with the annular air inlet channel 71 from outside to inside in sequence, the two side walls of the machine body are respectively provided with the main air inlet 7 and connected with the compressed air source 1, and the plurality of branch air vents 13 are distributed along the tangential direction and are communicated with the cavity, namely, the branch air vents 13 are arranged as tangential nozzles.
An outlet adjusting pipe 12 is further arranged at the inlet of the connection of the material pipe and the machine body, and the vertical distance between the outlet adjusting pipe 12 and the base plate machine seat is adjustable. In this embodiment, the junction of the material pipe 4 and the outlet adjusting pipe 12 is further provided with a conical inlet 41, the inlet 41 is gradually narrowed along the advancing direction, namely, is a reverse thrust conical surface, the outlet adjusting pipe 12 is vertically arranged, the conical inlet 41 is fixedly arranged on the inner wall of the outlet adjusting pipe 12 and is vertically adjustable with the outlet adjusting pipe 12, the selection of coarse and fine powder can be realized by adjusting the interval size between the conical inlet 41, namely, the reverse reactor conical surface and the outlet, and fine particles meeting the particle size requirement enter the cyclone separator through the ventilated material pipe to be collected.
A feed regulating valve 6 is also arranged at the inlet of the hopper 5 and the machine body, and controls the flow of the material to be crushed into the crushing cavity; and still be equipped with shock attenuation interlayer 8 between the shell 10 of organism and the cavity, smash material and cavity inner bag under shock attenuation interlayer 8, the protection effect of organism shell 10, can realize vibration-free, low noise production.
The compressed air source 1 is used for providing a compressed air source; the vortex crusher 2 is used for crushing materials; the cyclone separator 3 is used for collecting the crushed micro powder material; the compressed air source 1 can realize the adjustment control of the pressure P and the flow L of the compressed air source; when crushing production under high-pressure and large-flow parameter conditions, the cyclone separators 3 can be arranged in a plurality of stages in series, powder particles overflowing after crushing are collected, the front stage is used for collecting coarse particles, the rear stage is used for collecting fine particles, and low dust emission and raw material loss in the production process are realized.
The method of the particle shape adjustable fine grain abrasive air flow crushing device comprises the following steps:
(1) Firstly, adding materials to be crushed into a hopper, adjusting the vertical distance between an outlet adjusting pipe and a base plate machine seat, then introducing compressed gas into a vortex crusher, and forming supersonic vortex airflow by the compressed gas through a tangential nozzle;
(2) Opening a feeding regulating valve below the hopper, so that vortex airflow formed by compressed gas drives the input crushing materials to do high-speed centrifugal rotary motion, and crushing the materials through repeated collision, friction and shearing;
(3) The crushed materials move to a powder collecting device under the action of central vortex lifting airflow, and fine particles meeting the granularity requirement enter a cyclone separator through a ventilation pipe to be collected;
and coarse particles continue to move in the crushing area and continuously impact and rub to crush, so that high-efficiency continuous production of material crushing is realized.
Example 1
The base plate frame adopts fin-shaped baffles 91, a plurality of fin-shaped baffles 91 are arranged at intervals, and the inclination angle of each fin-shaped baffle is 10-30 degrees; in this embodiment, the fin-shaped baffles are uniformly arranged at intervals, and the inclination angle of the fin-shaped baffles is 20 degrees,
coarse-grain materials to be crushed are put into a hopper 5, and the flow rate of the materials to be crushed entering a crushing cavity is controlled through a feeding regulating valve 6; the compressed air source provided by the compressed air source 1 enters a branch air port 13 which is uniformly arranged through the main air inlet 7, namely a tangential nozzle, the tangential nozzle accelerates the low-speed compressed air source 1 into ultra-high-speed air flow, ultra-vortex air flow is formed in the cavity liner 11, crushed materials do high-speed rotary motion downwards under the action of gravity and vortex air flow, the crushed materials are generated under the impact collision action of the bottom and the fin-shaped baffle, turbulence is generated in the center of the cavity, and the crushed fine particle materials can move to the cyclone separator 3 to finish the collection of crushed materials under the air exhaust guiding action of the material pipe 4. By adjusting the gap distance dimension of the outlet regulator tube 12 from the bottom plate, selective control of the particle size of the pulverized material can be achieved. In the material crushing process, the number of the fin plates at the bottom is uniformly distributed in a plurality, so that the impact crushing effect among crushed objects can be effectively increased, and the abrasion of the crushed objects is reduced; the crushing and cavity liner 11 can realize vibration-free and low-noise production under the protection of the damping interlayer 8 and the shell 10.
Specifically, coarse diamond abrasive is put into the hopper 5; diamond particle size 120# (125 um) to be crushed; adopting a fin-shaped baffle 9, adjusting a compressed air source to a pressure of 0.8Mpa and a flow of 3m < 3 >/min; the height of the outlet regulating pipe 12 from the bottom plate is regulated to be 110mm; the production efficiency of the multi-edge diamond micro powder with the grain size of 5um is 8000-10000ct/h, and the crushed diamond abrasive micro powder has multi-edge angle and multi-edge grain shape as shown in figure 4.
Example 2
The base plate base adopts a conical plate 92 with a cone angle of 60-120 degrees, in this embodiment, 45 degrees. Coarse-grain materials to be crushed are put into a hopper 5, and the flow rate of the materials to be crushed entering a crushing cavity is controlled through a feeding regulating valve 6; compressed gas provided by the compressed gas source 1 enters tangential nozzles 13 which are uniformly arranged through the main gas inlet 7, the nozzles 13 accelerate low-speed compressed gas into ultrahigh-speed air flow, and ultra-high-speed vortex air flow is formed through the constraint of the liner 11, and the vortex air flow drives the input materials to do high-speed centrifugal rotary motion, so that the crushed materials collide and rub with each other, and the muddy circular powder particles can be formed. The guide cone of the cone plate 92 can guide the crushed materials to form ascending airflow, and the crushed materials can move to the cyclone separator 3 to collect the crushed materials under the action of the central lifting airflow through the material pipe 4. By adjusting the gap distance size between the opposite tapered surfaces of the outlet regulator tube 12, selective control of the particle size of the pulverized material can be achieved. In the whole production process, the crushing and cavity liner 11 can realize vibration-free and low-noise production under the protection of the damping interlayer 8 and the shell 10.
Raw grain size of coarse diamond abrasive to be crushed80#; the compressed air source is regulated to a pressure of 0.6Mpa and a flow rate of 2m 3 A/min; a smooth bottom plate without a baffle is adopted, namely, a 90-degree guiding conical plate 92 and an outlet adjusting pipe are selected, and the distance height is 80mm; the production efficiency of the equal-volume diamond micro powder with the grain size of less than 20um can be realized, namely 4000-6000ct/h, and the crushed diamond abrasive micro powder has a round passivation grain shape as shown in figure 5.
The invention discloses a particle shape adjustable fine grain abrasive air flow crushing device and a method, wherein a vortex type crusher and a cyclone separator connected with the vortex type crusher through a material pipe are arranged, a compressed air source is introduced into the front end of the vortex type crusher, the vortex type crusher is arranged into a closed cavity, the compressed air source is tangentially intersected with the inner wall of the cavity through a tangential nozzle to form high-speed vortex air flow, the high-speed vortex air flow is used for driving a crushed material to be thrown into the cavity to perform high-speed centrifugal rotary motion, the crushed material is crushed through repeated collision, friction and shearing, the crushed material can move to a powder collecting device under the action of central vortex lifting air flow, mechanical members are not arranged in the cavity, and the material crushing is completed by means of mutual collision, so that zero loss of a material crushing processing device part is realized. The particle size and the shape of the diamond abrasive are adjustable and controllable, and micro powder with the particle size ranging from 2 um to 200um can be produced; the particle shape of the prepared micro powder material can be regulated and controlled, the regulation and preparation of multi-blade particle shape, equal product shape and even nearly spherical particle shape can be realized, and the particle size concentration is high; the grinding material can be crushed and processed with high efficiency to produce micro powder grinding material with the efficiency more than 1Kg/h; the production process has the advantages of less equipment consumption, no pollution, energy conservation and environmental protection, and is particularly suitable for the crushing production of superfine powder materials such as abrasive materials, ceramic bond and the like.
Where the terms "first," "second," and the like are used in this patent to define components, those skilled in the art will recognize: the use of "first" and "second" is for convenience only as well as to simplify the description of the present invention, and the words described above are not meant to be limiting.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which are all within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "center", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.
Claims (9)
1. Particle shape adjustable fine grain abrasive air current breaker, its characterized in that: the device comprises a vortex type pulverizer and a cyclone separator connected with the vortex type pulverizer through a material pipe, wherein the front end of the vortex type pulverizer is communicated with a compressed air source, and a hopper for feeding is communicated with the upper part of the vortex type pulverizer;
the vortex type pulverizer comprises a machine body and a bottom plate machine seat detachably connected with the machine body, wherein an empty cavity is formed in the machine body, and the upper end face of the bottom plate machine seat positioned in the cavity is provided with a fin-shaped baffle or a conical plate;
the machine body is sequentially provided with a main air inlet, an annular air inlet channel communicated with the main air inlet and a plurality of branch air vents communicated with the annular air inlet channel from outside to inside, the two side walls of the machine body are respectively provided with the main air inlet and are connected with a compressed air source, and the plurality of branch air vents are distributed along the tangential direction and are communicated with the cavity;
an outlet adjusting pipe is further arranged at the inlet of the connection of the material pipe and the machine body, and the vertical distance between the outlet adjusting pipe and the base plate machine seat is adjustable.
2. A particle shape adjustable fine grit abrasive gas flow breaker as in claim 1 wherein: the fin-shaped baffles on the base plate machine seat are arranged at intervals, and the inclination angle of the fin-shaped baffles is 10-30 degrees.
3. A particle shape adjustable fine grit abrasive gas flow breaker as in claim 1 wherein: the junction of material pipe and export regulation pipe still is equipped with the access mouth of conical surface formula, and the access mouth sets up along advancing direction narrowing.
4. A particulate abrasive air blast crushing apparatus having an adjustable particle shape according to claim 3, wherein: the outlet adjusting pipes are vertically distributed, and the conical surface type access ports are fixedly arranged on the inner wall of the outlet adjusting pipes and are vertically adjustable with the outlet adjusting pipes.
5. A particle shape adjustable fine grit abrasive gas flow breaker as in claim 1 wherein: the cone angle of the conical plate on the base plate machine seat is 60-120 degrees.
6. A particle shape adjustable fine grit abrasive gas flow breaker as in claim 1 wherein: and a feeding regulating valve is also arranged at the inlet of the hopper and the machine body.
7. A particle shape adjustable fine grit abrasive gas flow breaker as in claim 1 wherein: and a damping interlayer is arranged between the shell and the cavity.
8. A particle shape adjustable fine grit abrasive gas flow breaker as in claim 1 wherein: the cyclone separator is also provided with a dust removing device.
9. A fine particle size abrasive gas flow disruption device and method as claimed in any one of claims 1 to 8, characterised by the steps of:
(1) Firstly, adding materials to be crushed into a hopper, adjusting the vertical distance between an outlet adjusting pipe and a base plate machine seat, then introducing compressed gas into a vortex crusher, and forming supersonic vortex airflow by the compressed gas through a tangential nozzle;
(2) Opening a feeding regulating valve below the hopper, so that vortex airflow formed by compressed gas drives the input crushing materials to do high-speed centrifugal rotary motion, and crushing the materials through repeated collision, friction and shearing;
(3) The crushed materials move to a powder collecting device under the action of central vortex lifting airflow, and fine particles meeting the granularity requirement enter a cyclone separator through a ventilation pipe to be collected;
and coarse particles continue to move in the crushing area and continuously impact and rub to crush, so that high-efficiency continuous production of material crushing is realized.
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| CN202311232133.7A CN117358382A (en) | 2023-09-22 | 2023-09-22 | Fine-granularity abrasive air flow crushing device and method with adjustable particle shape |
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| CN202311232133.7A CN117358382A (en) | 2023-09-22 | 2023-09-22 | Fine-granularity abrasive air flow crushing device and method with adjustable particle shape |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117861809A (en) * | 2024-03-11 | 2024-04-12 | 福建美宏科技有限公司 | Fluid-bed opposite-impact type jet mill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117861809A (en) * | 2024-03-11 | 2024-04-12 | 福建美宏科技有限公司 | Fluid-bed opposite-impact type jet mill |
| CN117861809B (en) * | 2024-03-11 | 2024-05-28 | 福建美宏科技有限公司 | Fluid-bed opposite-impact type jet mill |
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