High-efficient separation raymond mill suitable for small granule
The invention relates to the technical field of ore processing, in particular to a Raymond machine suitable for efficiently separating small particles.
The Raymond mill is a common milling device and is mainly used for high-fineness powder processing of 280 materials in industries such as barite, calcite, potash feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass, bluestone, petroleum coke, chemical raw material heat-insulating materials and the like, wherein the Mohs hardness of the materials is not more than 9.3, and the humidity of the materials is less than 6%.
The working principle of the existing Raymond mill is shown in figure 2, a material is led in through a feed inlet, a grinding roller is tightly rolled on a grinding ring under the action of centrifugal force, the material is shoveled by a shovel blade and conveyed to the middle of the grinding roller and the grinding ring, the material is crushed into powder under the action of rolling force, the powder material is blown up to pass through an analyzer under the action of a fan, the material reaching the fineness requirement passes through the analyzer, the material which does not reach the requirement is continuously ground in a regrinding cavity, the material passing through the analyzer is separated and collected in a cyclone separator, when small particles are blown by the fan to move upwards, the small particles are subjected to the double actions of centrifugal force and inertia force of the fan, and are gradually gathered together in the moving process, so that the small particles are gathered into large particle clusters, when passing through the analyzer, the large particles which are not agglomerated and are thrown out of a wheel and return to the mill for regrinding, on the one hand, the yield of fine powder is reduced, on the other hand has increased the broken energy consumption of unnecessary, and then the efficiency of influence raymond machine separation, simultaneously under the effect of centrifugation force again, the particulate matter is along equipment inner wall screw thread rebound, lead to large granule and tiny particle to converge together, cause the granule too concentrated when the analysis, the direct impact analysis machine flabellum of a large amount of particulate matters, lead to the flabellum to receive the dynamics of thumping, in addition the atress is inhomogeneous, deformation takes place easily, and fan axle center department receives the impact force, destroy the balance of flabellum easily, influence the rotation of flabellum, cause the effect of flabellum analysis to reduce, aggravate the wearing and tearing of axle center department simultaneously, cause the analysis effect to reduce, unable accurate analysis particulate matter.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides the efficient Raymond separating machine suitable for small particles, which has the advantages of dust diffusion and high separation efficiency and solves the problems in the background technology.
The invention provides the following technical scheme: the utility model provides a high-efficient separation lei meng machine suitable for tiny particle, includes organism, air duct pipe, driving shaft, spiller, grinding roller, drive arrangement, fan blade, and the air duct pipe is installed in the bottom of organism, and the driving shaft is installed in the inboard bottom of organism, and the spiller is installed on the driving shaft, and the grinding roller is installed in the tip of driving shaft, and drive arrangement installs in the inside of organism, and the fan blade is installed at the drive arrangement tip, ionizer is installed to the inner wall of organism, ionizer establishes the import department at the material, ionizer's annular is arranged on the inner wall of organism, the crisscross corona electrode that forms of ionizer, cover the export upside at the material after corona electrode forms.
Preferably, the corona electrode is composed of a positive ion generator and a negative ion generator, a positive electrode area and a negative electrode area are formed after the corona electrode is powered on, the corona electrode covers the middle of the machine body, and the corona electrode is composed of an annular electric field.
Preferably, the end cover of drive arrangement is equipped with the drive shaft, the tip fixedly connected with honeycomb duct of drive shaft, install the flabellum on the honeycomb duct, the wind-force that produces when the flabellum is rotatory is up, the suction that the flabellum produced is down, the bottom of honeycomb duct is the arc, the shape of flabellum is the arc form of bending.
Preferably, the ion generator is covered with a protection plate, the protection plate is made of wear-resistant rubber, and the outer wall of the protection plate is fixedly connected with the inner wall of the machine body.
The invention has the following beneficial effects:
1. this high-efficient separation raymond machine suitable for tiny particle, through the cooperation between ion generator and the corona utmost point, make the particulate matter that rises along with centrifugal force, and the corona utmost point between the contact, make the particulate matter attach positive charge or negative charge, utilize the principle of same kind of electric charge repulsion each other, make between the adjacent electric charge repulsion each other, make the direct dispersion of particulate matter, make the particulate matter when rising, evenly spread to the flabellum on, the even separation of the particulate matter of being convenient for, simultaneously to its high-efficient separation.
2. This high-efficient separation lei meng machine suitable for small granule, through the cooperation between honeycomb duct and the flabellum, make the ascending particulate matter of spiral, by the flabellum stirring to the diffusion all around of fan blade, simultaneously under the same pivoted dynamics, small particulate matter reachs the fan blade fast, and flow to the outside through the fan blade, heavier particulate matter, compare in lighter particulate matter speed slower, be blockked externally by the fan blade, make the particulate matter when the analysis, dispersion between small granule and the large granule, the dispersion of the particulate matter of being convenient for, the great particulate matter that drops simultaneously, be blown by the wind-force that the fan blade mixs, inner wall to the organism removes, make the particulate matter that drops, directly fall into between grinding roller and the grinding ring, reduce the wearing and tearing of spiller, further increase the separation effect of equipment.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of a conventional structure.
In the figure: 1. a body; 2. an air duct pipe; 3. a drive shaft; 4. a scraper knife; 5. grinding the roller; 6. a drive device; 7. a fan blade; 8. an ion generator; 9. a corona electrode; 10. a protection plate; 11. a drive shaft; 12. A flow guide pipe; 13. a fan blade.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a high-efficiency separation Raymond mill suitable for small particles comprises a mill body 1, an air duct pipe 2, a driving shaft 3, a scraper knife 4, a grinding roller 5, a driving device 6 and a fan blade 7, wherein the air duct pipe 2 is installed at the bottom of the mill body 1, the driving shaft 3 is installed at the bottom of the inner side of the mill body 1, the scraper knife 4 is installed on the driving shaft 3, the grinding roller 5 is installed at the end part of the driving shaft 3, the driving device 6 is installed inside the mill body 1, the fan blade 7 is installed at the end part of the driving device 6, an ion generator 8 is installed on the inner wall of the mill body 1, the ion generator 8 is arranged at the inlet of a material, the material is subjected to the action of centrifugal force and inertia force and must pass through a corona electrode 9 emitted by the ion generator 8, so that the material is attached with charges after passing through the back, the ion generator 8 is annularly arranged on the inner wall of the mill body 1, so that the corona electrodes 9 are densely arranged, so that each particle can be attached with electric charges, the ion generators 8 form corona electrodes 9 in a staggered mode, and the corona electrodes 9 cover the upper side of the material outlet after being formed.
Wherein, corona electrode 9 comprises positive and negative ion generator, corona electrode 9 forms positive electrode district and negative electrode district after the power supply, corona electrode 9 covers in the middle part of organism 1, corona electrode 9 constitutes annular electric field, and the granule is when the motion, can only attach a kind of electric charge, or positive charge or negative charge, can not both kinds of electric charges attach.
The end of the driving device 6 is sleeved with a driving shaft 11, the end of the driving shaft 11 is fixedly connected with a guide pipe 12, a fan blade 13 is installed on the guide pipe 12, wind power generated when the fan blade 13 rotates faces upwards, on one hand, the material can move upwards conveniently, on the other hand, when heavier particles fall, heavier particles are blown by the upward wind power and slowly fall towards the inner wall of the machine body 1, the heavier materials are prevented from directly falling and smashing equipment, the impact force on internal parts is reduced, the service life of the equipment in use is prolonged, the suction force generated by the fan blade 13 faces downwards, the bottom of the guide pipe 12 is arc-shaped, the friction between the materials and the guide pipe 12 is reduced, the fan blade 13 is arc-shaped and bent, the fan blade 13 has a certain length, and can wrap the materials and roll up the materials to move upwards when rotating.
Wherein, ion generator 8's outside covers there is guard plate 10, guard plate 10's material is wear-resisting rubber, guard plate 10's outer wall and organism 1's inner wall fixed connection are convenient for carry out the outside protection to ion generator 8, prevent that the material from pounding ion generator 8 bad, and guard plate 10's shape is oblique triangle-shaped simultaneously, and the material of being convenient for drops downwards, also is convenient for the material rebound.
The theory of operation, the particulate matter after the breakage, upwards along the inner wall spiral of organism 1, when corona utmost point, by subsidiary positive charge or negative charge, through the principle that like electric charge repels, the ascending particulate matter of spiral, it arranges the diffusion to be repelled mutually, then drive arrangement 6 drives flabellum 13 and honeycomb duct 12 and rotates, flabellum 13 is when rotating, directly curl up partial particulate matter, utilize the effect of centrifugal force and inertia force, move up, further disperse the distance between the particulate matter, then utilize under the same effort, heavier particulate matter receives gravity and the great reason of resistance, lighter particulate matter is than heavier particulate matter moves up more fast, heavier particulate matter receives the influence of gravity, alleviate and the collision between fan blade 7 then drops, when dropping, by the dynamics that flabellum 13 rotates, repel to the outside, slide down along the inner wall of organism 1, the resistance between the inner walls when the particles slide down slows down the descending speed of the heavier particles, and the separation of the particles of the whole equipment is realized.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.