CN203281381U - Efficient energy-saving jet mill - Google Patents
Efficient energy-saving jet mill Download PDFInfo
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- CN203281381U CN203281381U CN2013203289353U CN201320328935U CN203281381U CN 203281381 U CN203281381 U CN 203281381U CN 2013203289353 U CN2013203289353 U CN 2013203289353U CN 201320328935 U CN201320328935 U CN 201320328935U CN 203281381 U CN203281381 U CN 203281381U
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Abstract
The utility model discloses an efficient energy-saving jet mill. A rotation shaft of a classification wheel is fixed through two supporting points, a dustproof structure is arranged at a material discharging side of the classification wheel, and a direct and non-turning material discharging structure is adopted, the rotation speed of the classification wheel is largely improved, the efficient energy-saving jet mill is applicable to high-accuracy classification, and an energy-saving dustproof effect is achieved for the classification wheel. The efficient energy-saving jet mill is further provided with a bearing dustproof structure to guarantee a safe use environment for a bearing. The framework of the classification wheel is composed of a front impeller disc, a rear impeller disc, a middle impeller disc and a connecting sleeve barrel, so that the rigidity of the classification wheel is improved. Vanes of the classification wheel comprise main vanes and auxiliary vanes, can eliminate eddies and lower wind resistance. An air inlet pipe of a spraying nozzle is bent towards the direction near a cavity of the jet mill and then is connected with the spraying nozzle, so that the structure is compact. The material level is controlled in a weighing mode, the error range is reduced. The section of the bottom of the cavity of the jet mill is arc, so that residual amount and occupied space of materials are reduced.
Description
Technical field
The utility model belongs to airslide disintegrating mill structure field, is specifically related to a kind of high performance airslide disintegrating mill that improves structure.
Background technology
All by compressed air is entered to pulverize cavity through the nozzle high velocity jet during airslide disintegrating mill work, material is repeatedly collided, is rubbed, is sheared and pulverized at the joint place of multiply high pressure draught, material after pulverizing moves to graded region with ascending air under blower fan draft effect, under the powerful centrifugal action that the grading wheel of High Rotation Speed produces, make the thickness feed separation, meet the fine grained of granularity requirements by the grading wheel discharging, coarse granule drops to disintegrating area to be continued to pulverize.Wherein, during grading wheel work, the gas powder is under the effect of centrifugal force, and large or heavy particle centrifugalization power is large, thus got rid of to the grading wheel periphery to graded region limit wall, and no longer be subjected to the impact of centrifugal force, naturally drop in pulverizer and continue to pulverize; Little or light material is subjected to centrifugal action little, with air-flow, enters grading wheel, and suitable Flows is to next unit.Rotating speed by regulating grading wheel is the size of centrifugal force during the capable of regulating gradation just, reaches the purpose of the material that separates designated size.
In prior art, grading wheel is fixedly connected on rotating shaft in center, and rotating shaft connects external impetus equipment, and the interior ring of bearing is fixedly connected on rotating shaft and outer shroud is fixedly connected on bearing block, and the barrel of bearing block and airslide disintegrating mill is rigidly connected.Owing to having gap between bearing block and rotating shaft, in order to prevent that the material powder from entering in bearing and causing damage along gap, generally to adopt air-tight structure between rotating shaft and bearing block, namely at bearing block, on the inner face of rotating shaft, annular groove is set, by pass into Compressed Gas in described annular groove, carries out the dust sealing.The shortcoming of this hermetically-sealed construction is to need to use compressed air, has increased energy consumption.
In prior art, as shown in Figure 3, grading wheel 5 is by the forward and backward impeller disk 51 at two ends, 52 and be fixedly connected on one between impeller disk circle blade and form, has the charging seam between adjacent blade, the inboard of one circle blade forms cavity, and the rear impeller disk seals, the centre of the front impeller disk has discharging opening, be material be periphery from grading wheel advance and in the past the centre of the impeller disk go out, as shown in the direction of arrow in Fig. 2, material enters in the discharger in grading wheel the place ahead after out immediately from grading wheel.Because grading wheel is to be fixed in rotating shaft and to follow the rotating shaft rotation, discharger is fixed on cylindrical shell static, therefore must have minim gap between grading wheel and discharger to guarantee the normal rotation of grading wheel, outer coarse granule material inwardly leaks but the minim gap between grading wheel and discharger easily causes grading wheel, thereby affects effectiveness of classification.in prior art, for the ease of the location between grading wheel and rotating shaft, as shown in Figure 3, the middle part of the rear impeller disk is extended with forward a taper connection sleeve 53, this taper connection sleeve is placed on rotating shaft and with rotating shaft and is fixedly connected with, the inner surface of this taper connection sleeve is to be taper surface with rotating shaft coaxle and the face of cylinder of matching and its outer surface, and this taper connection sleeve is shorter, before generally only from the rear impeller disk, extending to deficiency, half of rear impeller disk spacing, in order to increase rigidity, this taper connection sleeve adopts taper, there is following defect in the grading wheel structure of above-mentioned prior art: rigidity is not enough, critical speed is low, be not suitable for High Rotation Speed.And as shown in Figure 5, traditional blade is straight plate type vane 57, and adopt the perpendicular assembling mode of blade and wheel hub, there is following defect in this blade construction: when grading wheel rotated, blade can produce local eddy currents, this eddy current can increase gas-flow resistance, thereby can affect the output of classification.
In prior art, grading wheel is fixed in cylindrical shell by rotating shaft list fulcrum, and the transmission critical speed of this grading wheel is lower, in case near critical speed, violent resonance will occur grading wheel, easily causes device damage.Also have and adopt fixedly rotating shaft of two fulcrums, the rotating shaft of grading wheel to pass grading wheel and rotational positioning in bearing corresponding to cylindrical shell both sides, this pair of fulcrum roller be the mode of rotating shaft fixedly, has to a certain degree solved single fulcrum transmission critical speed problem on the low side.But usually the bearing of grading wheel discharge end is located at outside discharger, the certain angle of must turning back while causing from the discharger discharging, as shown in Figure 7, folding turn 90 degrees.Because grading wheel discharge end bearing is located at outside discharger, cause rotating shaft longer, the critical speed of grading wheel is difficult to further raising.
In prior art, the nozzle air intake structure of airslide disintegrating mill as shown in Figure 9, all nozzles 8 are horizontally disposed with, each nozzle 8 is connected with an air inlet pipe 10, air inlet pipe 10 connects gas distribution plate 9, and air inlet pipe 10 is the sides that are connected in gas distribution plate 9, therefore air inlet pipe 10 takes the shape of the letter U, be that air inlet pipe 10 is inwardly turned back to nozzle 8, being connected after outwardly-bent with the direction away from pulverizing cavity before this again, therefore, such air intake structure relatively takes up space, and makes the occupation of land space of whole airslide disintegrating mill larger; Moreover because air inlet pipe is the U-shaped reentrant type, so the air pressure loss is larger.
In prior art, the material level of airslide disintegrating mill cavity is controlled, and is to reach by the feeding quantity that the current feedback signal of classification motor is controlled charging mechanism, and the control accuracy of this mode is low, affects crush efficiency.
In prior art, the cavity bottom of airslide disintegrating mill as shown in figure 13, is all generally conically shaped 20 structures, the conically shaped bottom lock, and the shortcoming of this conically shaped structure is that bottom material residual quantity is larger.
The utility model content
In order to address the above problem, the utility model provides a kind of energy-efficient air-flow pulverizer, energy-efficient air-flow pulverizer of the present utility model has improved fixed structure and the discharging structure of rotating shaft, also have bearing dustproof construction and grading wheel exit side dustproof construction, the skeleton of grading wheel and blade have also adopted brand-new structure, and in cavity, the material level of material is controlled the brand-new mode that also adopted, improve crushing and classification precision and the efficiency of airslide disintegrating mill, ensured the safe and stable operation of airslide disintegrating mill.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of energy-efficient air-flow pulverizer, comprise grading wheel, rotating shaft, discharger, nozzle and gas distribution plate, also has following characteristics:
grading wheel is fixedly connected on rotating shaft in center, grading wheel the place ahead has discharger, the feed end of described discharger is relative with the discharge end of described grading wheel, the charging aperture of described discharger is communicated with the discharging opening of described grading wheel, the discharging opening of described discharger and the discharging opening of described grading wheel are in the same way, and has gap between described discharger and described grading wheel, gap location between described discharger and described grading wheel is provided with the first labyrinth seal, one end of described rotating shaft is fixedly connected on the cylindrical shell of airslide disintegrating mill by bearing, the other end of described rotating shaft is fixedly connected in described discharger by bearing,
Described rotating shaft connects external impetus equipment, the bearing that is positioned at described rotating shaft terminal is all that the ring of bearing is fixedly connected on rotating shaft and outer shroud is fixed in bearing block, and described bearing block hides the outer shroud of described bearing, all has gap between bearing block and rotating shaft, described bearing has axially two relative end faces, be provided with the second labyrinth seal around at least one end of described bearing and rotating shaft, the end face of described the second described bearing of labyrinth seal covering and contactless with the end face of bearing.
The utility model for the further technical scheme that solves its technical problem and adopt is:
say further, described grading wheel comprises the front impeller disk, the rear impeller disk and a circle blade, the described front impeller disk and the rear impeller disk lay respectively at the two ends of grading wheel, a described circle blade is fixedly connected between the front impeller disk and the rear impeller disk, has the charging seam between adjacent blade, the inboard of one circle blade forms cavity, the centre of the front impeller disk has discharging opening, rear impeller disk sealing, the centre of the described rear impeller disk is extended with forward a branch sleeve, described branch sleeve can be placed on rotating shaft, the front end of the described branch sleeve middle leaf wheel disc that extended radially outwardly, a described circle blade is fixedly connected with described middle leaf wheel disc, and described middle leaf wheel disc has the opening for circulation before and after material.
Be preferably, each described blade all consists of a primary blades and at least one auxiliary blade, described auxiliary blade be fixedly connected on described primary blades and and described primary blades between have angle.
say further, described airslide disintegrating mill has main body and charging mechanism, described main body is fixed on frame, gas distribution plate is by pipeline external compressed air source, the junction of described main body and described frame is provided with Weighing module, the feedback signal of telecommunication of described Weighing module is controlled the feeding quantity of charging mechanism, described gas distribution plate relative upper, lower end all is fixedly connected with flexible body, described flexible body has gas channel, one of them flexible body one end is connected with described gas distribution plate and communicates and other end sealing, another flexible body one end is connected with described gas distribution plate and communicates and the other end is connected and communicates with described pipeline, be rigidly connected between two flexible bodies.
say further, the structure of described the second labyrinth seal is: be provided with rotary body, described rotary body is fixed on described rotating shaft, described rotary body has the rotary body end face relative with described bearing and bearing block, described rotary body end face is provided with some circle the first annular tooth, described bearing block has the bearing block end face relative with described rotary body end face, described bearing block end face is provided with some circle the second annular tooth, described some circles the first annular tooth and described some circles the second annular tooth are all concentric, and described the first annular tooth and described the second interlaced arrangement of annular tooth, described the first annular tooth does not contact with described the second annular tooth and is formed with each other gap.
Be preferably, also be provided with circle second whirlwind sheet on described rotary body end face, described circle second whirlwind sheet is positioned at the periphery of the second annular tooth of outmost turns, contactless and be formed with gap between the second annular tooth of described the second whirlwind sheet and described outmost turns, contactless and be formed with gap between described the second whirlwind sheet and described bearing block.
Say further, the structure of described the first labyrinth seal is: the discharge end of described grading wheel is provided with some circle the 3rd annular tooth, described discharger is provided with some circle the 4th annular tooth towards the face of described grading wheel, described some circles the 3rd annular tooth and described some circles the 4th annular tooth are all concentric, and described the 3rd annular tooth and described the 4th interlaced arrangement of annular tooth, described the 3rd annular tooth do not contact with described the 4th annular tooth and are formed with each other gap.
Be preferably, also be provided with circle first whirlwind sheet on the discharge end of described grading wheel, described circle first whirlwind sheet is positioned at the periphery of the 4th annular tooth of outmost turns, contactless and be formed with gap between the 4th annular tooth of described the first whirlwind sheet and described outmost turns, contactless and be formed with gap between described the first whirlwind sheet and described discharger.
Be preferably, the described other end of two flexible bodies all is fixed with horizontal contiguous block, is fixedly connected with some rigid connecting rods longitudinally between two contiguous blocks in up and down.
Be preferably, described branch sleeve be surfaces externally and internally all with the cylindricality branch sleeve of rotating shaft coaxle.
Say further, be provided with some nozzles and some air inlet pipe, described nozzle is horizontally placed in the cavity of main body of airslide disintegrating mill, described gas distribution plate be positioned at cavity outer and be positioned at described nozzle above or below, described air inlet pipe one end connects described nozzle and the other end connects described gas distribution plate, when described gas distribution plate was positioned at the top of described nozzle, the described air inlet pipe other end was connected in the lower end of described gas distribution plate; When described gas distribution plate was positioned at the below of described nozzle, the described air inlet pipe other end was connected in the upper end of described gas distribution plate.
Say further, the cavity bottom of airslide disintegrating mill is the curved arc tube of section, and described arc tube lower end closed.
Be preferably, the structure of described arc tube lower end closed is: described arc tube lower end has end socket, described end socket sealing described arc tube lower end, and described end socket is detachable.
The beneficial effects of the utility model are: energy-efficient air-flow pulverizer of the present utility model has following advantage:
One, the utility model adopts the fixedly rotating shaft of grading wheel of two fulcrums, and at the grading wheel exit side, dustproof construction is set, and adopt the discharging structure that does not directly turn round: by the fixing grading wheel of two fulcrums, can increase substantially the critical speed of grading wheel, and the bearing of grading wheel discharge end is fixed in discharger, can shorten the length of rotating shaft, can further improve the rotating speed of grading wheel, make it to be applicable to high-precision classification; The utility model is provided with the first labyrinth seal structure between the two at discharger and grading wheel, a series of labyrinth gap in the first labyrinth seal, can stop dust granules to pass through, thereby play dustproof effect, in addition, outside in the first labyrinth, also be provided with several the first whirlwind sheets, and the centrifugal force that produces by rotor reaches dustproof purpose, compared to prior art, the utility model can increase substantially effectiveness of classification, and need not external gas source, has saved energy consumption;
two, the utlity model has the bearing dustproof construction: the utility model is to be provided with the second labyrinth seal structure around the end of bearing and rotating shaft, a series of labyrinth gap in the second labyrinth seal, can stop dust granules to pass through, thereby play dustproof effect, in addition, outside in the second labyrinth, also be provided with several the second whirlwind sheets, the centrifugal force that produces by rotor reaches dustproof purpose, thereby play the effect of bearing proofing dust and protecting, compared to prior art, the utility model is not only simple in structure, be beneficial to enforcement, and need not external gas source, reduced energy consumption, can guarantee that the bearing environment for use is safe and reliable,
Three, the utility model has been done architecture advances to grading wheel: the skeleton structure of grading wheel of the present utility model is to consist of the front impeller disk, the rear impeller disk, middle leaf wheel disc and branch sleeve, blade is fixed on the front impeller disk, the rear impeller disk and middle leaf wheel disc simultaneously, improve the rigidity of grading wheel, be more suitable for High Rotation Speed; And blade is to consist of primary blades and auxiliary blade, therefore can eliminate eddy current, reduces windage, and then improved output and effectiveness of classification;
Four, the utility model has improved the nozzle air intake structure: the air inlet pipe of nozzle of the present utility model is directly with the direction of the cavity near airslide disintegrating mill, to be bent to nozzle and to be connected, air inlet pipe be be similar to L shaped, U-shaped reentrant type air intake structure compared to prior art, air intake structure of the present utility model is more compact, therefore make the occupation of land space of whole airslide disintegrating mill less, and the air pressure loss of air inlet pipe is also less;
Five, the utility model adopts weighting manner to control the height of material level in the airslide disintegrating mill cavity, and the departure scope of material level is dwindled, and crush efficiency improves;
Six, the cavity bottom section of airslide disintegrating mill of the present utility model is curved, can reduce the material residual quantity after each pulverizing finishes; Reduce longitudinal length than the conically shaped of prior art, thereby can reduce the height of whole airslide disintegrating mill, minimizing takes up space.
Description of drawings
Fig. 1 is the structural representation that bearing of the present utility model place is provided with the second labyrinth seal;
Fig. 2 is the structural representation that the exit side of grading wheel of the present utility model is provided with the first labyrinth seal;
Fig. 3 is a kind of grading wheel structural representation of prior art;
Fig. 4 is grading wheel structural representation of the present utility model;
Fig. 5 is the blade construction schematic diagram of a kind of grading wheel of prior art;
Fig. 6 is the structural representation of the blade of grading wheel of the present utility model;
Fig. 7 is the discharging structure schematic diagram of prior art;
Fig. 8 is discharging structure schematic diagram of the present utility model;
Fig. 9 is the air intake structure schematic diagram of the nozzle of prior art;
Figure 10 is the air intake structure schematic diagram of nozzle of the present utility model;
Figure 11 is the monnolithic case structural representation of airslide disintegrating mill of the present utility model;
Figure 12 is that gas distribution plate of the present utility model place is provided with the structural representation of flexible body for the equalizing pressure fluctuation;
Figure 13 is the cavity bottom structural representation of the airslide disintegrating mill of prior art;
Figure 14 is the cavity bottom structural representation of airslide disintegrating mill of the present utility model.
The specific embodiment
Embodiment: a kind of energy-efficient air-flow pulverizer, comprise grading wheel, rotating shaft, discharger, nozzle and gas distribution plate, also have following design feature:
as shown in Figure 2 and Figure 8, grading wheel 5 is fixedly connected on rotating shaft 1 in center, grading wheel 5 the place aheads have discharger 6, the feed end of described discharger is relative with the discharge end of described grading wheel, the charging aperture of described discharger is communicated with the discharging opening of described grading wheel, the discharging opening 61 of described discharger and the discharging opening of described grading wheel are in the same way, and has gap between described discharger 6 and described grading wheel 5, gap location between described discharger and described grading wheel is provided with the first labyrinth seal 7, one end of described rotating shaft is fixedly connected on the cylindrical shell of airslide disintegrating mill by bearing, the other end of described rotating shaft is fixedly connected in described discharger by bearing.
At first, the utility model passes through fixedly grading wheel of two fulcrums, compares traditional single pivot point suspending arm structure, greatly improved the critical speed of rotor, the bearing of grading wheel discharge end is fixed in discharger in addition, has shortened the length of rotating shaft, can further improve critical speed again.Compared to prior art, the grading wheel rotating speed can improve more than 50%, reaches the fine grading effect; Moreover the discharge end of grading wheel is relative with the feed end of discharger, and the discharging opening of the discharging opening of discharger and grading wheel is in the same way, thus the resistance while reducing the grading wheel discharging, and then the operating efficiency of raising grading wheel.More what deserves to be explained is, the utility model is provided with the first labyrinth seal structure between the two at discharger and grading wheel, and a series of labyrinth gap in the first labyrinth seal can stop dust granules to pass through, thereby play dustproof effect.Compared to prior art, the utility model can increase substantially effectiveness of classification, and need not external gas source, has saved energy consumption.
Described rotating shaft 1 connects external impetus equipment, as shown in Figure 1, the bearing 2 that is positioned at described rotating shaft terminal is all that the ring of bearing is fixedly connected on rotating shaft 1 and outer shroud is fixed in bearing block 3, and described bearing block 3 hides the outer shroud of described bearing 2, all has gap between bearing block 3 and rotating shaft 1, described bearing 2 has axially two relative end faces, be provided with the second labyrinth seal 4 around at least one end of described bearing 2 and rotating shaft 1, the end face of described the second labyrinth seal 4 described bearings 2 of covering and contactless with the end face of bearing.
The utility model is to be provided with the second labyrinth seal structure around the end of bearing and rotating shaft, and a series of labyrinth gap in the second labyrinth seal, can stop dust granules to pass through, thereby play dustproof effect.Compared to prior art, the utility model is not only simple in structure, is beneficial to enforcement, and need not external gas source, has reduced energy consumption, can guarantee that the bearing environment for use is safe and reliable.
as shown in Figure 4, described grading wheel 5 comprises the front impeller disk 51, the rear impeller disk 52 and a circle blade, the described front impeller disk and the rear impeller disk lay respectively at the two ends of grading wheel, a described circle blade is fixedly connected between the front impeller disk and the rear impeller disk, has the charging seam between adjacent blade, the inboard of one circle blade forms cavity, the centre of the front impeller disk has discharging opening, rear impeller disk sealing, the centre of the described rear impeller disk is extended with forward a branch sleeve 54, described branch sleeve can be placed on rotating shaft, the front end of the described branch sleeve middle leaf wheel disc 55 that extended radially outwardly, a described circle blade is fixedly connected with described middle leaf wheel disc, and described middle leaf wheel disc has the opening for circulation before and after material.The skeleton structure of grading wheel of the present utility model is to consist of the front impeller disk, the rear impeller disk, middle leaf wheel disc and branch sleeve, and blade is fixed on the front impeller disk, the rear impeller disk and middle leaf wheel disc simultaneously, has improved the rigidity of grading wheel, is more suitable for High Rotation Speed.
As shown in Figure 6, each described blade 56 all consists of a primary blades 561 and at least one auxiliary blade 562, described auxiliary blade 562 be fixedly connected with (as welding) in as described in primary blades 561 and and as described in have angle between primary blades.Because blade is to consist of primary blades and auxiliary blade, therefore can eliminate the eddy current that graded blade produces, reduced windage, reduced energy consumption, improved classification efficiency.During concrete enforcement, better structure can be: each described blade all consists of a primary blades and an auxiliary blade, wherein said primary blades is straight plate type vane, the described front impeller disk and the described rear impeller disk have wheel hub, the circumference oblique of described primary blades and described wheel hub, the primary blades size is greater than auxiliary blade dimensions, and the cross section of the blade that consists of described primary blades and auxiliary blade is the y font, and the prong of y word is outside.
as Figure 11 and shown in Figure 12, described airslide disintegrating mill has main body and charging mechanism, described main body is fixed on frame 11, gas distribution plate 9 is by pipeline 12 external compressed air sources, the junction of described main body and described frame is provided with Weighing module 13, the feedback signal of telecommunication of described Weighing module is controlled the feeding quantity of charging mechanism, described gas distribution plate 9 relative upper, lower end all is fixedly connected with flexible body, described flexible body has gas channel, one of them flexible body 141 1 end is connected with described gas distribution plate and communicates and other end sealing, another flexible body 142 1 ends are connected with described gas distribution plate and communicate and the other end is connected and communicates with described pipeline 12, be rigidly connected between two flexible bodies.Structure of the present utility model is when air inlet and distribution, and gas pressure can be balanced by the flexible body at two ends, gas distribution plate up and down, has avoided the impact of pressure oscillation on the accuracy of weighing, and improves the control accuracy to material level, improves crush efficiency.
as shown in Figure 1, the structure of described the second labyrinth seal 4 is: be provided with rotary body 16, described rotary body 16 is fixed on described rotating shaft 1, described rotary body has the rotary body end face relative with described bearing and bearing block, described rotary body end face is provided with some circle the first annular tooth 164, described bearing block has the bearing block end face relative with described rotary body end face, described bearing block end face is provided with some circle the second annular tooth 34, described some circles the first annular tooth 164 and described some circles the second annular tooth 34 are all concentric, and described the first annular tooth and described the second interlaced arrangement of annular tooth, described the first annular tooth does not contact with described the second annular tooth and is formed with each other gap.
As shown in Figure 1, also be provided with circle second whirlwind sheet 161 on described rotary body end face, described circle second whirlwind sheet 161 is positioned at the periphery of the second annular tooth of outmost turns, contactless and be formed with gap between the second annular tooth of described the second whirlwind sheet and described outmost turns, contactless and be formed with gap between described the second whirlwind sheet and described bearing block.The second whirlwind sheet utilizes centrifugal force that dust is thrown away while with rotating shaft, rotating together, further plays dustproof effect.
As shown in Figure 2, the structure of described the first labyrinth seal 7 is: the discharge end of described grading wheel 5 is provided with some circle the 3rd annular tooth 517, described discharger 6 is provided with some circle the 4th annular tooth 67 towards the face of described grading wheel, described some circles the 3rd annular tooth 517 and described some circles the 4th annular tooth 67 are all concentric, and described the 3rd annular tooth 517 and described the 4th interlaced arrangement of annular tooth 67, described the 3rd annular tooth 517 do not contact with described the 4th annular tooth 67 and are formed with each other gap.
As shown in Figure 2, also be provided with circle first whirlwind sheet 511 on the discharge end of described grading wheel 5, described circle first whirlwind sheet 511 is positioned at the periphery of the 4th annular tooth 67 of outmost turns, contactless and be formed with gap between the 4th annular tooth of described the first whirlwind sheet and described outmost turns, contactless and be formed with gap between described the first whirlwind sheet and described discharger.The first whirlwind sheet utilizes centrifugal force that dust is thrown away while with grading wheel, rotating together, further plays dustproof effect.
As shown in figure 12, the described other end of two flexible bodies all is fixed with horizontal contiguous block 22, is fixedly connected with some rigid connecting rods longitudinally 21 between two contiguous blocks in up and down.During concrete enforcement, described flexible body is metal bellows, described contiguous block is ring flange, the ring flange that a wherein said flexible body connects is sealing, and the ring flange that described another flexible body connects have the supplied gas circulation through hole and with described pipeline communication, a described flexible body is positioned at the top of described gas distribution plate, and described another flexible body is positioned at the below of described gas distribution plate.
As shown in Figure 4, described branch sleeve 54 be surfaces externally and internally all with the cylindricality branch sleeve of rotating shaft coaxle.During concrete enforcement, described branch sleeve 54 is cylindrical branch sleeves that surfaces externally and internally is all the face of cylinder; The length of described branch sleeve 54 is greater than the front impeller disk 51 and the rear impeller disk 52 half of distance between the two; The described front impeller disk, the rear impeller disk, middle leaf wheel disc and branch sleeve are integrated; Described blade is welded in the front impeller disk, the rear impeller disk and middle leaf wheel disc.
As shown in figure 10, be provided with some nozzles 8 and some air inlet pipe 10, described nozzle 8 is horizontally placed in the cavity of main body of airslide disintegrating mill, described gas distribution plate 9 be positioned at cavity outer and be positioned at described nozzle 8 above or below, described air inlet pipe 10 1 ends 101 connect described nozzle 8 and the other end 102 connects described gas distribution plate 9, when described gas distribution plate 9 was positioned at the top of described nozzle 8, the described air inlet pipe other end 102 was connected in the lower end of described gas distribution plate 9; When described gas distribution plate 9 was positioned at the below of described nozzle (8), the described air inlet pipe other end (102) was connected in described gas distribution plate) upper end.The air inlet pipe of nozzle of the present utility model is directly with the direction of the cavity near airslide disintegrating mill, to be bent to nozzle and to be connected, air inlet pipe be be similar to L shaped, U-shaped reentrant type air intake structure compared to prior art, air intake structure of the present utility model is more compact, therefore make the occupation of land space of whole airslide disintegrating mill less, and the air pressure loss of air inlet pipe is also less.During concrete enforcement, be provided with the first articulation 17, the described air inlet pipe other end 102 connects described gas distribution plate 9 by described the first articulation 17; Be provided with nozzle carrier 18 and the second articulation 19, described nozzle carrier 18 is fixed in the chamber wall of the cavity of airslide disintegrating mill, described nozzle 8 is installed on described nozzle carrier 18, described nozzle carrier 18 has the linkage section that is piercing in the outer level of cavity, described nozzle carrier center has the gas passage that communicates with described nozzle, and described air inlet pipe one end 101 is connected in the linkage section of described nozzle carrier 18 by described the second articulation 19.
As shown in figure 14, the cavity bottom of airslide disintegrating mill is the curved arc tube of section 15, and described arc tube lower end closed.The utility model can reduce the material residual quantity after each pulverizing finishes; Reduce longitudinal length than the conically shaped of prior art, thereby can reduce the height of whole airslide disintegrating mill, minimizing takes up space.The structure of described arc tube lower end closed is: described arc tube lower end has end socket 151, described end socket sealing described arc tube lower end, and described end socket 151 is detachable.
Claims (13)
1. an energy-efficient air-flow pulverizer, comprise grading wheel, rotating shaft, discharger, nozzle and gas distribution plate, it is characterized in that:
grading wheel (5) is fixedly connected on rotating shaft (1) in center, grading wheel (5) the place ahead has discharger (6), the feed end of described discharger is relative with the discharge end of described grading wheel, the charging aperture of described discharger is communicated with the discharging opening of described grading wheel, the discharging opening of the discharging opening of described discharger (61) and described grading wheel in the same way, and has gap between described discharger (6) and described grading wheel (5), gap location between described discharger and described grading wheel is provided with the first labyrinth seal (7), one end of described rotating shaft is fixedly connected on the cylindrical shell of airslide disintegrating mill by bearing, the other end of described rotating shaft is fixedly connected in described discharger by bearing,
described rotating shaft (1) connects external impetus equipment, the bearing (2) that is positioned at described rotating shaft terminal is all that the ring of bearing is fixedly connected on rotating shaft (1) and outer shroud is fixed in bearing block (3), and described bearing block (3) hides the outer shroud of described bearing (2), all has gap between bearing block (3) and rotating shaft (1), described bearing (2) has axially two relative end faces, be provided with the second labyrinth seal (4) around at least one end of described bearing (2) and rotating shaft (1), described the second labyrinth seal (4) hides the end face of described bearing (2) and contactless with the end face of bearing.
2. energy-efficient air-flow pulverizer as claimed in claim 1, it is characterized in that: described grading wheel (5) comprises the front impeller disk (51), the rear impeller disk (52) and a circle blade, the described front impeller disk and the rear impeller disk lay respectively at the two ends of grading wheel, a described circle blade is fixedly connected between the front impeller disk and the rear impeller disk, has the charging seam between adjacent blade, the inboard of one circle blade forms cavity, the centre of the front impeller disk has discharging opening, rear impeller disk sealing, the centre of the described rear impeller disk is extended with forward a branch sleeve (54), described branch sleeve can be placed on rotating shaft, the front end of the described branch sleeve middle leaf wheel disc (55) that extended radially outwardly, a described circle blade is fixedly connected with described middle leaf wheel disc, and described middle leaf wheel disc has the opening for circulation before and after material.
3. energy-efficient air-flow pulverizer as claimed in claim 2, it is characterized in that: each described blade (56) all consists of a primary blades (561) and at least one auxiliary blade (562), described auxiliary blade (562) be fixedly connected on described primary blades (561) and and described primary blades between have angle.
4. energy-efficient air-flow pulverizer as claimed in claim 1, it is characterized in that: described airslide disintegrating mill has main body and charging mechanism, described main body is fixed on frame (11), gas distribution plate (9) is by pipeline (12) external compressed air source, the junction of described main body and described frame is provided with Weighing module (13), the feedback signal of telecommunication of described Weighing module is controlled the feeding quantity of charging mechanism, described gas distribution plate (9) relative upper, lower end all is fixedly connected with flexible body, described flexible body has gas channel, one of them flexible body (141) one end is connected with described gas distribution plate and communicates and other end sealing, another flexible body (142) one ends are connected with described gas distribution plate and communicate and the other end is connected and communicates with described pipeline (12), be rigidly connected between two flexible bodies.
5. energy-efficient air-flow pulverizer as claimed in claim 1, it is characterized in that: the structure of described the second labyrinth seal (4) is: be provided with rotary body (16), described rotary body (16) is fixed on described rotating shaft (1), described rotary body has the rotary body end face relative with described bearing and bearing block, described rotary body end face is provided with some circle the first annular tooth (164), described bearing block has the bearing block end face relative with described rotary body end face, described bearing block end face is provided with some circle the second annular tooth (34), described some circles the first annular tooth (164) and described some circles the second annular tooth (34) are all concentric, and described the first annular tooth and described the second interlaced arrangement of annular tooth, described the first annular tooth does not contact with described the second annular tooth and is formed with each other gap.
6. energy-efficient air-flow pulverizer as claimed in claim 5, it is characterized in that: also be provided with circle second whirlwind sheet (161) on described rotary body end face, described circle second whirlwind sheet (161) is positioned at the periphery of the second annular tooth of outmost turns, contactless and be formed with gap between the second annular tooth of described the second whirlwind sheet and described outmost turns, contactless and be formed with gap between described the second whirlwind sheet and described bearing block.
7. energy-efficient air-flow pulverizer as claimed in claim 1, it is characterized in that: the structure of described the first labyrinth seal (7) is: the discharge end of described grading wheel (5) is provided with some circle the 3rd annular tooth (517), described discharger (6) is provided with some circle the 4th annular tooth (67) towards the face of described grading wheel, described some circles the 3rd annular tooth (517) and described some circles the 4th annular tooth (67) are all concentric, and described the 3rd annular tooth (517) and the interlaced arrangement of described the 4th annular tooth (67), described the 3rd annular tooth (517) does not contact with described the 4th annular tooth (67) and is formed with each other gap.
8. energy-efficient air-flow pulverizer as claimed in claim 7, it is characterized in that: also be provided with circle first whirlwind sheet (511) on the discharge end of described grading wheel (5), described circle first whirlwind sheet (511) is positioned at the periphery of the 4th annular tooth (67) of outmost turns, contactless and be formed with gap between the 4th annular tooth of described the first whirlwind sheet and described outmost turns, contactless and be formed with gap between described the first whirlwind sheet and described discharger.
9. energy-efficient air-flow pulverizer as claimed in claim 4, it is characterized in that: the described other end of two flexible bodies all is fixed with horizontal contiguous block (22), is fixedly connected with some rigid connecting rods longitudinally (21) between two contiguous blocks in up and down.
10. energy-efficient air-flow pulverizer as claimed in claim 2 is characterized in that: described branch sleeve (54) be surfaces externally and internally all with the cylindricality branch sleeve of rotating shaft coaxle.
11. energy-efficient air-flow pulverizer as claimed in claim 4, it is characterized in that: be provided with some nozzles (8) and some air inlet pipe (10), described nozzle (8) is horizontally placed in the cavity of main body of airslide disintegrating mill, described gas distribution plate (9) be positioned at cavity outer and be positioned at described nozzle (8) above or below, described air inlet pipe (10) one ends (101) connect described nozzle (8) and the other end (102) connects described gas distribution plate (9), when described gas distribution plate (9) is positioned at the top of described nozzle (8), the described air inlet pipe other end (102) is connected in the lower end of described gas distribution plate (9), when described gas distribution plate (9) was positioned at the below of described nozzle (8), the described air inlet pipe other end (102) was connected in the upper end of described gas distribution plate (9).
12. energy-efficient air-flow pulverizer as claimed in claim 1 is characterized in that: the cavity bottom of airslide disintegrating mill is the curved arc tube of section, and described arc tube lower end closed.
13. energy-efficient air-flow pulverizer as claimed in claim 12, it is characterized in that: the structure of described arc tube lower end closed is: described arc tube lower end has end socket (151), described end socket sealing described arc tube lower end, described end socket (151) is detachable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203289353U CN203281381U (en) | 2013-06-08 | 2013-06-08 | Efficient energy-saving jet mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203289353U CN203281381U (en) | 2013-06-08 | 2013-06-08 | Efficient energy-saving jet mill |
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| CN203281381U true CN203281381U (en) | 2013-11-13 |
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| CN2013203289353U Withdrawn - After Issue CN203281381U (en) | 2013-06-08 | 2013-06-08 | Efficient energy-saving jet mill |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706449A (en) * | 2013-12-27 | 2014-04-09 | 北京印刷学院 | Miniature negative pressure jet mill having crushing cavity with ellipsoidal structure |
| CN104226440A (en) * | 2013-06-08 | 2014-12-24 | 昆山市密友装备制造有限责任公司 | High-efficiency energy-saving airflow crusher |
| CN104841535A (en) * | 2014-02-18 | 2015-08-19 | 昆山市密友装备制造有限责任公司 | Jet mill according with crushing zone flow field |
-
2013
- 2013-06-08 CN CN2013203289353U patent/CN203281381U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226440A (en) * | 2013-06-08 | 2014-12-24 | 昆山市密友装备制造有限责任公司 | High-efficiency energy-saving airflow crusher |
| CN104226440B (en) * | 2013-06-08 | 2016-08-31 | 江苏密友粉体新装备制造有限公司 | Energy-efficient air-flow pulverizer |
| CN103706449A (en) * | 2013-12-27 | 2014-04-09 | 北京印刷学院 | Miniature negative pressure jet mill having crushing cavity with ellipsoidal structure |
| CN103706449B (en) * | 2013-12-27 | 2015-09-02 | 北京印刷学院 | A kind of small negative pressure airflow milling with ellipsoid structure crushing chamber |
| CN104841535A (en) * | 2014-02-18 | 2015-08-19 | 昆山市密友装备制造有限责任公司 | Jet mill according with crushing zone flow field |
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| CP01 | Change in the name or title of a patent holder |
Address after: 215300, No. 16 South hope road, Yushan Town, Kunshan City, Jiangsu, Suzhou Patentee after: JiangSu Miyou Powder New Equipment Manufacturing Co., Ltd. Address before: 215300, No. 16 South hope road, Yushan Town, Kunshan City, Jiangsu, Suzhou Patentee before: KUNSHAN MIYOU EQUIPMENT MANUFACTURING CO., LTD. |
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Granted publication date: 20131113 Effective date of abandoning: 20160831 |
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