CN104190621B - Wind sweeping type moving and motionless combination efficient dust separator - Google Patents

Wind sweeping type moving and motionless combination efficient dust separator Download PDF

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Publication number
CN104190621B
CN104190621B CN201410351432.7A CN201410351432A CN104190621B CN 104190621 B CN104190621 B CN 104190621B CN 201410351432 A CN201410351432 A CN 201410351432A CN 104190621 B CN104190621 B CN 104190621B
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cylinder body
inner cone
upper shell
middle cylinder
cone
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CN104190621A (en
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李镇
吴涛
蒲振杰
杜庆志
夏蕾
王逵
李金柱
刘世端
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CBMI Sinoma International Engineering Co., Ltd.
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CBMI SINOMA INTERNATIONAL ENGINEERING Co Ltd
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Abstract

The invention discloses a wind sweeping type moving and motionless combination efficient separator. The wind sweeping type moving and motionless combination efficient separator mainly comprises an air outlet, an upper cover plate, an upper cylinder body, a cage type rotor, a middle cylinder body, a lower cylinder body, an inner cone, a medium dust discharging opening, a coarse dust discharging opening and an air inlet. The separator is characterized in that a motor and a transmission device are arranged on the upper cover plate, the cage type rotor is composed of a support, a main shaft, grading blades and the like, and is in key connection with the main shaft, transmission is achieved by the motor through a speed reducer, a fine dust grading chamber is formed between the outer ring of the cage type rotor and the guide blades, the inner cone is arranged on the lower portion of the fine dust grading chamber, a coarse dust grading area is formed by the inner cone and the middle cylinder body, the inner cone is connected to a lower cone through a fixed plate, and flexible adjusting and control over product fineness and grain fineness distribution can be achieved by utilizing a frequency changer.

Description

A kind of wind formula of sweeping is association of activity and inertia high efficiency dust separator
Technical field
The present invention relates to a kind of powder body screening installation in the field such as building materials, nonmetallic ore, non-ferrous metal, electric power, specifically Say it is that a kind of wind formula of sweeping is association of activity and inertia efficient cyclone.
Background technology
Powder body is prepared and is widely used in building materials, nonmetallic ore, non-ferrous metal field, while the wound of the division technique with the modern times New and adjustment, the requirement more and more higher to preparation and the classification of powder body tailed over such as 80 μm of cement closed-circuit grinding its granularity and typically want Control less than 1% is asked, coal dust preparation system requires that fineness controls 80 μm and tails over less than 12%, and the uniformity to coal dust is proposed strictly Require, the charcoal element ball milling powder in coloured industry requires identical with fineness of pulverized coal.And in existing cement mill system Jing after roll squeezer Material enters separator Jing after V choosings in the form of wind is swept, while being separated using the wind formula of sweeping with charcoal element ball milling powder in pulverized coal preparation Device carries out the sorting of material.The existing classifying equipoment for separation system is essentially mill separator.Mill separator is used as The material separation device of a generation, has the advantages that simple structure, movement-less part and convenient operating maintenance, but because of its structure and divides The restriction of level principle, the use technical and economic performance of mill separator is poor, and under normal operating conditions, grinding efficiency is general only Have 20%~50% or so and product fineness adjusts difficult, finished powder quality stability is poor.
Wind of the prior art sweeps formula separator, under the carrying of material pneumatic to be sorted, introduces thick at a high speed by blast pipe Powder separator, into after separator, one is that the part coarse granule in air-flow first collides with inner cone lower edge, two is because interior Overflow section increase, the attenuating of the air-flow rate of climb that cone is formed with lower cone, and make coarse granule sedimentation glide along wall, air-flow Continue to rise, when there is certain angle after stationary baffles, because of itself and axle center, and produce certain rotational flow field, this seasonal epidemic pathogens Relatively coarse granule in stream because by larger centrifugal force and also along wall after upper shell does centrifugal sedimentation, moves to cylinder wall Glide, coarse powder is become by the discharge of coarse powder discharge port together with aforesaid coarse granule;Fine particle is then under the carrying of air-flow by going out Airduct is discharged, becomes finished powder Jing after follow-up segregation apparatuss are separated and collected.
Analyze its operation principle and understand that rotational flow field only relies on the guide functions of stationary baffles 26 and produces, its flow rotation Speed is high, centrifugal force field intensity is weak, therefore the grinding efficiency of the separator is low with effectiveness of classification, is processing air quantity compared with Gao Shicheng Product fineness is easily run thick;Meanwhile, finish fineness is mainly adjusted by changing stationary baffles 26 with the angle of axial direction, adjusting angle Impact of the change of degree inconvenience and angle to finish fineness is limited.Therefore, the performance of the mill separator is poor, directly Affect system throughput, separating effect and finished powder quality.
The content of the invention
For defect present in prior art and technical problem, the invention provides a kind of wind formula of sweeping is association of activity and inertia efficiently Dust separator, solves the problems, such as that existing wind sweeps that formula grader grinding efficiency is high, effectiveness of classification is poor and finished product lack of homogeneity, Formula separation system is swept for wind a kind of grinding efficiency height, unit power consumption are provided and product grading and fineness are capable of achieving remote-controllable A kind of wind formula of sweeping is association of activity and inertia separator, and the wind formula of sweeping separator of being association of activity and inertia can need to realize three part things according to scene The separation of material.Such as coloured carbon point, coarse powder, middle powder, the detached target of fine powder can be effectively realized.
To solve above-mentioned technical problem, the present invention is employed the following technical solutions:A kind of wind formula of sweeping is association of activity and inertia high efficiency dust Separator, including lower shell, middle cylinder body, upper shell, inner cone, cage grading rotor, motor, reductor and rotating shaft, it is described under Cylinder, middle cylinder body and upper shell are sequentially connected from bottom to up setting, and the lower shell is provided with air inlet;During the inner cone is located at The inside of cylinder position on the upper side, and annular passage is formed between inner cone and middle cylinder body, multiple leading is provided with the annular passage Stream plate;The upper shell is connected with annular passage, and the cage grading rotor is located inside upper shell, and is turned by rotating shaft drive It is dynamic, and guide vane is provided between upper shell and annular passage;The motor and speed reducer is located at upper shell top and drives and turns Axle is rotated;The lower shell bottom is additionally provided with coarse powder discharge port and once mends air-valve, and the inner cone bottom is provided with middle powder discharging Mouthful, the middle cylinder body bottom is additionally provided with secondary benefit air-valve, and middle cylinder body top is provided with discharge pipe.
Preferably, the upset aperture of the deflector is adjustable in 0~90 ° of scope, such that it is able to control opening for deflector Degree size and the air quantity for filling into, the final dust for intercepting absorption specified particle diameter, reach finer separation accuracy.
Preferably, the cage grading rotor is made up of 60~180 wear-resisting steel plates.
Preferably, the bottom of the interior vertebral body is additionally provided with multangular gas deflector cone, so as to improve air intake air-flow and wind-guiding The collision of cone, more efficient interception is adsorbed compared with coarse powder material, it is to avoid coarse powder enters middle cylinder body.
Preferably, the guide vane is made up of 30~80 pieces of wear-resisting steel plates, and with annular passage mouth section in 30~ 80 ° of angles, such that it is able to effectively be dispersed into the air-flow of upper shell, it is to avoid too short into the time of staying after upper shell in air flow collection, Directly go out from discharge pipe, finally improve the separating effect of fine powder.
Beneficial effect:Relative to prior art, the present invention has advantages below:
(1)Material one dividing into three:According to existing mill separator structure, it is only sorted to the material after comminution, only Realize sorting to the granule of a certain particle diameter, such as power plant's coal dust 0.08mm, cement 0.045mm, after-smithing petroleum coke 0.1mm are carried out point Choosing.The equipment is capable of achieving comminution material one dividing into three, and the material after coarse powder, middle powder, fine powder, sorting can be according to practical situation need Arranged in pairs or groups, such as petroleum coke needs uniformity index, as long as middle powder improves the quality of carbon anode as finished product, reduced resistance Rate reduces unit power consumption.
(2)Coarse powder, middle powder, fine powder size tunable:After material Jing after grinding can by deflection cone, once mend air-valve, two Secondary benefit air-valve controls the grain diameter of coarse powder and middle powder can turn realize that granularity is controllable from rotating speed by secondary benefit air-valve and classification. Such as cement grinding roller press system, can according to go out roller press raw meal particle size and adjust corresponding position control rollback press particle diameter, Enter the particle diameter of grinding machine and the particle diameter of roller press finished product, improve the mechanical efficiency of roller press and enter the cement grind materials uniformity and improve crowded Pressure and mill efficiency, improve yield and reduce power consumption;
(3)Coarse powder, middle powder, fine powder uniformity are good.Because of the sorted rear one dividing into three of material, while and can with partition size The construction featuress of control, its uniformity is greatly improved, and such as power plant is in fine powder fineness R90In the case of reaching technological requirement, its is equal Even property coefficient contributes to the raising of the stable and its thermal efficiency of Combustion Operation of Boilers up to 1.0 ~ 1.2.
(4)Good sealing effect:Using dual labyrinth seal double containment form, air flow shortcircuit, overall powder concentrator are effectively reduced Effect is good, it is ensured that sharpness of separation.
(5)Deflector is individually adjusted:According to CFD results of study, its wind sweeps formula air-flow between lower shell and Inner cones not It is that constant speed rises, and it is bigger than normal to be proximate to air outlet side speed, original structure stationary baffles integrated regulation, to finished product meso-position radius shadow Sound is larger, and this invention is capable of achieving 90 ° of freedom of deflector and individually adjusts, and realizes that gravity break-in is separated.
(6)Once mend air-valve, secondary benefit air-valve and realize air rate adjustment, sorting material:Existing wind is swept in formula separator, from entering Airduct is all to adjust fine powder quality according only to stationary baffles under closed separation system, i.e. air quantity certain condition to discharge pipe. The invention can realize gravity separation area in the case where air quantity is certain by the different opening of once benefit air-valve, secondary benefit air-valve Domain material gravity situation is sorted, while taking into account the effect of deflector, can effectively improve the precision and sorting effect of gravity separation Rate.Simultaneously secondary benefit air-valve can effectively change direction and the air quantity of the wind speed of the stepped zone of grading rotor, effectively improve classification The stepped zone of rotor, improves the effect of centrifugal force field, so as to improve classification efficiency and precision.
(7)Grinding efficiency is high:The cyclone separator arrangement is combined on the basis of static mill separator application, with reference to CFD skills The novel device of art exploitation, integrates gravitational field, leaves the theatre in separating structure material, the phase materials of effectively utilizes air-flow two point Level principle, it compares with traditional mill separator, and grinding efficiency can improve 15%~40%.
(8)Scope of application width:In the material of one dividing into three, needed that coarse powder can be allow to sort particle diameter model according to material characteristic Enclose for 2mm ~ 0.10mm, it is 0.10mm ~ 0.030 mm that middle powder can sort the scope of particle diameter, and the particle size range that fine powder can be sorted is <0.03mm.Can be in power plant's coal dust preparation system, limestone desulfurization system, cement grinding, charcoal according to the sorting particle size range result Plain mud is pinched petroleum coke separation system, flyash after formation system, charcoal and is floatd and apply in many aidr bells blast systems such as pearl separation system, can have Effect improves the efficiency of separation and effectiveness of classification, improves quality of finished.
Description of the drawings
Fig. 1 is the contour structures schematic diagram of dust separator of the present invention;
Fig. 2 is the internal structure schematic diagram of dust separator of the present invention.
Wherein, motor 1, motor cabinet 2, transmission bracket 3, power transmission shaft 4, labyrinth seal 5, grading rotor 6, guide vane 7, two Secondary benefit air-valve 8, inner cone 9, fixed plate 10, deflector 11, gas deflector cone 12, middle powder discharge port 13, coarse powder discharge port 14, air inlet 15th, reductor 16, shaft coupling 17, reducer pedestal 18, discharge pipe 19, upper cover plate 20, upper shell 21, middle cylinder body 22, lower shell 23, Once mend air-valve 24.
Specific embodiment
With reference to specific embodiments and the drawings, the present invention is described in further detail.
As illustrated in fig. 1 and 2, a kind of wind formula of sweeping is association of activity and inertia efficient cyclone, and motor 1 and reductor 16 pass through respectively motor Seat 2 and reducer pedestal 18 are fixed on the top of transmission bracket 3, and the bottom of reductor 16 is provided with shaft coupling 17, are driven with power transmission shaft composition Part;Transmission is realized by motor 1 and reductor 16;Transmission bracket 3, discharge pipe 19 are fixed on the top of upper cover plate 20;Upper cover plate 20 are welded in the top of upper shell 21 and upper shell 21, middle cylinder body 22, the composition wind formula of sweeping of lower shell 23 is association of activity and inertia efficient cyclone Housing parts, upper shell 21, middle cylinder body 22, lower shell 23 pass sequentially through flange connection, and each connecting portion is all provided with sealing ring.Top cylinder Body 21 is provided with 2 ~ 6 secondary benefit air-valves 8, is internally provided with 30 ~ 80 in 30 ° ~ 80 ° wear-resisting steel plate guide vanes 7 and classification Rotor 6, is made up of by 30 ~ 180 on the grading rotor 6 of power transmission shaft 4 wear-resisting steel plate graded blade, and guide vane 7 leads to Cross bolt and be fixed on the top and the bottom of upper shell 21, grading rotor 6 schedules the bottom of power transmission shaft 4 by keying;Inner cone 9 is located at classification and turns Sub 6 bottoms are connected and upper shell 21 and middle cylinder body 22 between and by 6 ~ 12 pieces of welding of fixed plate 10 and middle cylinder body 22 by flange On, the bottom of Inner cones 9 is provided with 2 ~ 4 middle powder discharge ports 13, and gas deflector cone 12 is welded in the bottom of Inner cones 9;20 ~ 80 deflectors 11 It is fixed between Inner cones 9 and middle cylinder body 22 by rotary shaft 4 positioned at the bottom of fixed plate 10;2 ~ 6 are provided with the bottom of middle cylinder body 22 Individual coarse powder discharge port 14 and 1 air inlet 15.
The course of work of the present invention is as follows:
Material after grinding exists>Jing air inlets 15 enter efficient cyclone of being association of activity and inertia under the wind speed of 16m/s, because excessively stream is cut The increase of face area and the benefit wind effect for once mending air-valve 24, the air-flow rate of climb is rapidly reduced and touched with the lower end of gas deflector cone 12 Hit, some bulky grains settle glided along the inwall of lower shell 24 under gravity, while receiving once mend air-valve 24 secondary point It is elected to be with gravity secondary sorting is carried out, tiny material is entered in rising dust-contained airflow again with the material after sorting, Jing gravity point Material after choosing enters the rising space of middle cylinder body 22 and inner cone 9 under air-flow rolling action, now in the work of deflector 11 With under, material again passes by gravity separation and break-in, and bulky grain is again introduced into the thing of the inwall of lower shell 24 and a gravity separation Material Jing coarse powder discharge port 14 is discharged and becomes coarse powder;Dust-contained airflow Jing after deflector 11 leads between middle cylinder body 22 and inner cone 9 Road rises again, reaches between middle cylinder body 22 and guide vane 7, now receives the benefit wind effect of secondary benefit air-valve 8, ascending air Strongly reduce again, carry out eye middle cylinder body 22 after gravity classification again compared with coarse granule and slid with the wall of lower shell 23, and it is remaining Material Jing guide vanes 7 under air-flow rolling action enter the stepped zone of grading rotor 6, and the material into stepped zone is dividing Stably rotate under the drive of level rotor 6, material realizes classification under the collective effect of centrifugal force field, drag force and gravity.Thin material Because less by centrifugal force, it is impossible to overcome the effect of fluid resistance, grading rotor 6 is passed through in the presence of drag force, gone out by finished product Mouth 19 is discharged and is association of activity and inertia outside efficient cyclone, and by outside gas-solid separating device fine powder is collected into.Middle powder material is in centrifugal force And settle into inside Inner cones along the side wall of guide vane 7 in the presence of gravity, powder discharge port is discharged to receive and collected in Jing.
CFD numerical simulations:In CFD numerical simulations, carry out the N-4000 wind formulas of sweeping using SolidWorks and be association of activity and inertia height Effect separator model is set up, initial condition:Rotor speed 70rpm, 90rpm, 110rpm, 130rpm, 150rpm, 170rpm, place Reason air quantity 240000m/h, it is 100% once to mend valve area, and secondary benefit valve area is 30%, 60%, 90%, material particular diameter 0.001 ~ 6mm is distributed, and density is 3100kg/m3.The numerical simulation in pure flow field is using blanketk-εModel equation, gas-solid Two phase flow adopts the Lagrangian particle model trajectory of bidirectional coupled random orbit.
CFD numerical simulation results show:Air quantity is processed in 240000m/h, rotor speed 90rpm, air-valve is once mended and is opened Spend for 100%, secondary benefit valve area is 60%, coarse powder with>0.5mm is reference, middle powder with 0.5mm ~ 0.040mm as reference, carefully Powder with<0.040mm is reference, and its separating effect is, coarse powder>0.5mm granules are collected completely, 0.5mm ~ 0.040mm in middle powder Granule content be 85%, in fine powder<The content of 0.040mm is higher than 92%.

Claims (3)

1. a kind of wind formula of sweeping is association of activity and inertia high efficiency dust separator, it is characterised in that:Including lower shell, middle cylinder body, upper shell, interior Cone, cage grading rotor, motor, reductor and rotating shaft, the lower shell, middle cylinder body and upper shell are sequentially connected from bottom to up Arrange, the lower shell is provided with air inlet;The inner cone is located at the inside position on the upper side of middle cylinder body, and inner cone and middle cylinder Annular passage is formed between body, multiple deflectors are provided with the annular passage;The upper shell is connected with annular passage, the cage Formula grading rotor is located inside upper shell, and drives rotation by rotating shaft, and directing vane is provided between upper shell and annular passage Piece;The motor and speed reducer is located at upper shell top and drives axis of rotation;The lower shell bottom is additionally provided with coarse powder discharging Mouthful and once mend air-valve, the inner cone bottom is provided with middle powder discharge port, and the upper shell bottom is additionally provided with 2 ~ 6 secondary benefit wind Valve, middle cylinder body top is provided with discharge pipe;The upset aperture of the deflector is adjustable in 0~90 ° of scope;The bottom of the inner cone It is provided with multangular gas deflector cone.
2. according to claim 1 the wind formula of sweeping is association of activity and inertia high efficiency dust separator, it is characterised in that:The cage classification turns Son is made up of 60~180 wear-resisting steel plates.
3. according to claim 1 the wind formula of sweeping is association of activity and inertia high efficiency dust separator, it is characterised in that:The guide vane by 30~80 pieces of wear-resisting steel plate compositions, and be in 30~80 ° of angles with annular passage mouth section.
CN201410351432.7A 2014-07-22 2014-07-22 Wind sweeping type moving and motionless combination efficient dust separator Active CN104190621B (en)

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CN107008562A (en) * 2017-04-13 2017-08-04 江门市中建科技开发有限公司 A kind of vertical powder concentrator of new cement raw material

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FR2741286B1 (en) * 1995-11-21 1998-01-23 Fcb AIR SEPARATOR WITH CENTRIFUGAL ACTION
CN202052701U (en) * 2011-01-18 2011-11-30 赵益民 Powder concentrator capable of sorting out component materials having particles of rough, medium, and fine particle sizes
CN202199508U (en) * 2011-08-10 2012-04-25 詹爱平 Rotary coarse coal powder separator with both fixed blades and moving blades
CN202962874U (en) * 2012-11-30 2013-06-05 黄立娜 High-efficiency dynamic sorting device with automatically-adjustable baffle
CN204035032U (en) * 2014-07-22 2014-12-24 中材装备集团有限公司 A kind of wind formula of sweeping is association of activity and inertia high efficiency dust separator

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Effective date of registration: 20160824

Address after: 211100 general road, Jiangning Development Zone, Jiangsu, Nanjing, China, No. 106

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