WO2014082596A1 - 档板自动调节高效串联双轴向动态分选、回粉碾磨装置 - Google Patents

档板自动调节高效串联双轴向动态分选、回粉碾磨装置 Download PDF

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Publication number
WO2014082596A1
WO2014082596A1 PCT/CN2013/088137 CN2013088137W WO2014082596A1 WO 2014082596 A1 WO2014082596 A1 WO 2014082596A1 CN 2013088137 W CN2013088137 W CN 2013088137W WO 2014082596 A1 WO2014082596 A1 WO 2014082596A1
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WO
WIPO (PCT)
Prior art keywords
baffle
powder
sorting
cone
grinding
Prior art date
Application number
PCT/CN2013/088137
Other languages
English (en)
French (fr)
Inventor
黄立娜
李德忠
黄立新
Original Assignee
Huang Lina
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huang Lina filed Critical Huang Lina
Priority to US14/648,683 priority Critical patent/US10105711B2/en
Publication of WO2014082596A1 publication Critical patent/WO2014082596A1/zh

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Classifications

    • 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
    • B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
    • B02C19/005—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) the materials to be pulverised being disintegrated by collision of, or friction between, the material particles
    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the invention relates to a pulverized coal gas-solid two-phase fluid sorting and bag grinding device, in particular to a gear plate automatic adjusting high-efficiency series biaxial dynamic sorting and powder-returning grinding device.
  • the dynamic separator has the advantages of large adjustable fineness of coal powder and high index of coal powder uniformity. It is widely used in medium speed coal mills.
  • dynamic separation technology Also began to apply the storage type milling system in the ball mill.
  • the dynamic separator also has problems in that the fineness of the pulverized coal is finer, the cycle magnification is increased, the separation efficiency is lowered, and the resistance is increased, which limits the development of the dynamic separation technique.
  • the technical problem solved by the present invention is to solve the above-mentioned problems, and provide a high-efficiency series biaxial dynamic sorting and powder-returning grinding device for flap flapping adjustment.
  • the wood invention combines the dynamic separation technology with the series of biaxial sorting technology to capture a new brand.
  • Pulverized coal sorting technology uses multi-stage sorting technology such as centrifugal sorting and gravity sorting to perform multi-stage sorting and grading milling on coal powder and powder return to reduce the ratio of the qualified coal powder in the powder return and the cycle rate.
  • the baffle automatically adjusts the high-efficiency series biaxial dynamic sorting and returning grinding device, including the sorting device into the U tube, the inner vertebral body, and the outer cone shell with the powder returning L tube at the bottom;
  • the central height is horizontally mounted with a plurality of primary baffles along the inner circumference of the outer conical shell, and a horizontal secondary beta plate is horizontally mounted on the inner surface of the outer conical shell, the primary 3 ⁇ 4 plate and
  • the second-level ⁇ 3 plates are fixed on the baffle shaft at one end, and the baffle shaft is fitted with an adjusting rod outside the outer casing of the outer cup;
  • the outer part of the outer cone shell is provided with a plurality of explosion-proof doors, and the outer casing of the outer cone shell is externally mounted with a frequency conversion motor.
  • the top plate is opened U and connected to the U main pipe, and is characterized in that: an inner bearing sleeve fixing pipe is fixedly mounted outside the IJ pipe of the sorting device, and an annular space between the outer cone shell and the inner bearing sleeve fixing pipe is fixed.
  • a ring of grinding gear for grinding the powder back is installed in the cavity, the grinding gear is a small cone structure inside and outside, and the gear shafts of the inner end and the outer end of the grinding gear are respectively loaded by the grinding device bearing.
  • the grinding device bearings at both ends of the grinding gear are provided with sealing means for preventing pulverized coal from leaking into the bearing.
  • the outer cone of the inner cone is provided with an axial fan blade.
  • the outer cone of the inner cone is fixedly mounted with a moving blade composed of a swaying blade, thereby performing a "heart sorting" on the pulverized coal.
  • the first-stage baffle and the second-stage baffle respectively control the opening degree of the regulating baffle by an automatic adjusting mechanism of each of the cymbals, the S-moving adjusting mechanism includes a brake motor and a guiding pulley, and each baffle shaft is outside the outer cone shell Fixing a 3 ⁇ 4 straight dial with a wire rope fixing device between the outer edge of the dial and an adjusting rod fixed to the same baffle shaft; the baffle shaft is fixed in the sleeve of the D-bearing, The sleeve is welded to the outer cone and is reinforced by the rib; the output shaft of the brake motor is fixed with the wire rope, and the wire rope sequentially bypasses the guide pulley on one side of the dial, along the outer edge of the dial to the copper wire fixing device Continue to follow the guide pulley between the outer edge of the dial to the adjacent dial, connect the first-level ⁇ 3 board or the second-level ⁇ 3 board in series, and finally return to the output shaft with the brake motor and the
  • Wire rope adjustment ring The brake motor with the primary baffle or the secondary baffle is mounted above the first or third slab, and the wire rope with the brake motor runs horizontally on both sides of the output shaft of the motor. After the pulley, change to a straight direction, and bypass the guide pulleys on the sides of two adjacent dials, and then connect the respective dials and adjustment levers in turn.
  • a balance block for adjusting the balance of the adjusting mechanism is fixed.
  • the top plate is evenly distributed with a plurality of openings connected to the u-tube, and the other end of the outlet u-tube is connected to the input end of the outlet u-tube.
  • a root tube is disposed above the top plate, and the root tube is rotated by the u tube and connected to the outlet tube 14 .
  • a rotor rotor for centrifugal sorting is fixedly mounted on an outer side of the upper portion of the inner cone; a gap is left between the inner cone and the first-stage 3 ⁇ 4 plate and the secondary baffle, and the inner cone is a ⁇ variable frequency motor
  • the output shaft drives the rotating cavity.
  • the invention consists of a dynamic sorting device, a static sorting device and a powder-returning grinding device.
  • the dynamic sorting device, the variable frequency motor, the inner cone and the lower end of the inner cone, the axial flow airfoil blade and the upper end rotor blade turn
  • the composition is composed of a static sorting device, an outer cone, a two-stage baffle fixed to the outer cone, and a baffle tilting adjustment device;
  • the powder-returning device is driven by a variable frequency motor, with a reducer coupling, and grinding It consists of a bearing, a bearing sleeve and a wear-resistant gear set.
  • the inner vertebral rotating variable frequency motor drives the entire inner cone to rotate.
  • the baffle By adjusting the frequency of the inverter, changing the motor speed, adjusting the inner cone rotation speed, thereby adjusting the fineness of the pulverized coal, the baffle is fully open or some Degree, guiding the wind powder mixture; unqualified coal powder along the sorting device shell 3 ⁇ 4 to the wear-resistant gear set set in the powder collecting tube-bu, through the grinding frequency motor driving the wear-resistant gear rotation, will return Part of the unqualified pulverized coal in the powder is ground into qualified pulverized coal. If there is a fault in the dynamic sorting, the inverter motor can be stopped immediately, the flap adjustment mechanism is activated, and the dynamic separation is static sorting.
  • the powder-returning mill unit is self-contained and can be operated independently without being affected by dynamic partial faults. The impact of boiler system equipment failure on boiler operation is minimized, and the operational reliability of the system equipment is improved.
  • the inner cone is a closed cavity, the upper part is provided with a turn-by-turn leaf composition, and the fine separation of the fineness of the coal powder is performed, and the lower end portion is provided with a rotary axial flow airfoil blade for the initial inlet sorting device.
  • the mixture of the air flour plays a pre-sorting role, so that some of the coarse-grain coals are sorted by centrifugation.
  • the rotating axial-flow airfoil blades also increase the pulverized coal that has been sorted at the upper end into the second Separation opportunities have led to the partial sorting of the selected pulverized coal powder, which has reduced the cycle rate and improved the efficiency of sorting. Further 'Axial airfoil blade further having a certain lift head, serves to reduce the resistance effect sorting apparatus 3
  • the two-stage baffle of the outer cone shell is fixed at one end.
  • the baffle shaft is fixed by the bearing and the bushing, which makes the baffle flexible and does not jam, and adopts sealing technology to ensure the stability of the bearing.
  • the fixed ribs of the bushing ensure that the baffle works stably and does not deform.
  • the baffle 5 dynamic adjustment mechanism ⁇ use the wire rope traction baffle "section link, the wire rope to change the direction by the guide pulley, to achieve the movement of the baffle, so as to automatically adjust the fineness of pulverized coal.
  • the sorting device outputs u as the root pipe. Finally, after the W root pipe rotates at a certain angle in the direction of the airflow rotation, it is connected with the outlet pipe #, and merges into a 1J pipe to reduce the rotation strength and resistance of the qualified coal powder.
  • baffle and axial flow airfoil blades are casted, and the worn parts are treated with anti-wear treatment to reduce wear and improve the service life of the device.
  • the invention concentrates on the advantages of the series biaxial static sorting device and the dynamic sorting device, and can be operated dynamically or statically, and can also be combined with static and dynamic operation to improve operation efficiency and reliability.
  • the powder-returning grinding part adopts the wear-resistant gear set, and some unqualified pulverized coal in the recycled powder is crushed and crushed into qualified coal powder through the wear-resistant gear teeth, which greatly reduces the cycle rate and improves the coal powder uniformity index. H greatly improves the sorting efficiency of the sorting device and the output of the milling system.
  • the series double-axis two-stage baffle can adjust the angle to achieve the turbulent adjustment of the fineness of the coal powder in the case that the dynamic sorting device cannot operate.
  • the output of the milling system and the fineness of the coal powder improve the efficiency of the boiler and reduce the emission of carbon dioxide.
  • the beneficial effects of the invention are multi-stage sorting and powder grading of air-liquid two-phase fluid using pneumatic powder Milling, to greatly improve the sorting device sorting efficiency, and thus improve the milling system output, reduce the milling unit consumption, at the same time, expand the fineness adjustment range of coal powder, greatly improve the coal powder uniformity index, catch high The ability of coal-fired boilers to adapt to coal quality.
  • Wood inventions can also be applied to material sorting devices in industries such as cement, metallurgy, and petrochemicals.
  • ⁇ i is a longitudinal section of the overall structure of the wood invention
  • Figure 2 is a magnified view of the powder back grinding gear plate.
  • Figure 3 is a connection diagram of a single grinding gear and the whole.
  • ⁇ 4 is an enlarged view of A in Figure 1,
  • Figure 5 is a schematic view showing the unfolded state of the sill [3 ⁇ 4 motion adjustment mechanism
  • Figure 6 is an enlarged cross section of the top plate at the top plate
  • Figure 7 is an enlarged cross-sectional view of a primary baffle or a secondary baffle.
  • ⁇ i a sorting device into U1 tube, 2 - expansion cone, 3 - axial flow airfoil blade, 4 - impact cone, 5 - inner cone, 6 - first gear, 7 - second gear , 8 - top cone, 9 - output shaft, 10 - rotor rotor, 11 - inner cone rotating frequency motor, 12 - out L4 tube, 13 - explosion-proof door, 14 one out U main tube, 15 - oblique back powder U tube, 16-ribbed plate, 17-bearing, 18-sleeve, 19-plate shaft, 20-fixing frame, 21-adjusting rod, 22-wire rope fixing device, 23-brake motor, 24-wire rope, 25 - Balance block, 26 - Guide pulley, 27 - Outer cone shell, 28 - Inner bearing sleeve fixed tube, 29 - Complement bearing sleeve 0 fixed tube, 30 - Rubbing device bearing, 31 - Milling variable frequency motor, 32 - with speed reduction Box coupling, 33
  • the baffle plate is adjusted to adjust the high efficiency ⁇ -linked biaxial dynamic sorting and powder-returning grinding device, including the sorting device into the LI tube 1, and the closed
  • the vertebral body 5, the outer cone shell 27 of the U tube 15 is returned to the powder;
  • the sorting device is usually inserted into the U tube 1 at the top with the expanding cone 2, the bottom of the inner cone 5 is with the impact cone 4 and the top is with the top cone 8, and the powder is returned.
  • the U-tube 15 is coaxial with the inner vertebral body, and is mounted at the bottom of the inner cone to obliquely exit L4.
  • the outer cone shell 27 is internally provided with a plurality of first-stage baffles 6 on the inside, and a second-stage rafter 7 is also arranged along the outer cone shell 27 on the first-stage baffle plate 6, and the first-stage 3 ⁇ 4 plate 6 is And the secondary baffle 7 is fixed at one end to the baffle shaft 19, and the baffle shaft is disposed outside the outer cone shell with an adjusting rod 21; the outer part of the outer cone shell is provided with an explosion-proof door 13 and the top plate 38 of the outer cone shell is externally mounted
  • the inner vertebral body rotates the variable frequency motor 11 , the output shaft of the variable frequency motor is connected with the reduction box with the coupling, and the output shaft of the reduction box is connected to the inner vertebral body 5 through the top plate, as shown in FIG.
  • the sorting device is inserted into the U-tube 1 and has an inner bearing sleeve fixing tube 28, and a ring is arranged in the annular cavity between the outer cone shell 27 and the inner bearing sleeve fixing tube 28 for classifying and grinding the powder.
  • the grinding gear 34 is a cone structure, and the inner end and the outer end of the gear shaft 35 are respectively mounted on the inner bearing sleeve fixing tube 28 and the outer cone shell through the grinding device bearing 30, adjacent to the two The grinding gears mesh with each other, and the rotating shaft of one of the grinding gears 34 is fixed to the output shaft of the milling inverter motor 31 via the reduction gearbox 32 Increasing the grinding disc of the powder backing can greatly improve the fineness of the backing, so that the sorting system has again milled the coarse particles returned to the powder in the loading S, so that most of the unqualified powders become Qualified pulverized coal.
  • the top end of the U-tube 1 is provided with a taper 2, and the taper 2 is welded to the top end of the U-tube 1 by the sorting device, and when the air-melt mixture passes through the taper 2 whose flow area is gradually increased, the speed is lowered. Gravity sorting occurs, and some large particles of coal powder are sorted due to stall.
  • the inner cone 5 is designed to close the hollow body, fit inside the outer cone shell 27, and is coaxial with the outer vertebral shell 27, and the flow passage of the air powder mixture between the inner cone and the outer cone shell; the inner cone 5 is disposed
  • the inner vertebral rotating variable frequency motor 11 on the top of the sorting device drives the rotation.
  • the powder-returning mill is installed with the slanting back to the U-tube 15 position, and the wear-resistant gear is used to grind the powder back by crushing and grinding.
  • a grinding gear 34 is arranged at a position of the U-tube 15 obliquely back, and one end of the grinding gear 34 is fixed to the outer end bearing sleeve 33 and the inner end bearing sleeve 36 through the outer ring of the bearing of the grinding device, and the outer end bearing
  • the sleeve 33 and the inner end bearing sleeve 36 are respectively welded to the outer vertebral shell 27 and the inner bearing sleeve fixing tube 28, and the inner bearing sleeve fixing tube 28 and the sorting device into the U tube 1 form a closed cavity at the bottom end of the closed cavity
  • the pipeline is connected to the clean instrumented compressed air pipe to ensure that the pressure in the cavity is slanted back to the pressure in the U pipe 15 .
  • the milled variable frequency motor 31 passes through the shaft reducer 32 with a reduction gearbox A certain grinding gear 34 is connected, the inverter speed is adjusted, the rotation speed of the grinding gear 34 is changed, and the other "grinding gears are rotated, and some unqualified powders are milled into qualified coal powder.
  • Milling device bearings 30 at both ends of the grinding gear 34 are mounted outside the annular cavity to reduce the contamination of the grinding device bearing 30.
  • the outer side of the inner cone 5 is provided with an axial fan blade 3 .
  • the axial flow wing blade is arranged at the lower end of the inner cone, and the air powder mixture is rotated by the rotation of the axial flow airfoil blade 3, and part of the coarse particle coal powder is thrown into the outer cone shell 27 by centrifugal separation to generate centrifugal separation.
  • some of the qualified pulverized coal powders that have been sorted - have the opportunity to participate in the second sorting, reduce the cycle rate, improve the sorting efficiency, and improve the sorting device head Reduce the resistance of the sorting device.
  • the rotor rotor 10 for centrifugal sorting is fixedly mounted on the outer side of the top cone 8 of the inner cone 5.
  • the upper end of the inner cone 5 is provided with a rotatable moving blade turned 10, and the final centrifugal separation of the pulverized coal subjected to multi-stage sorting, the qualified pulverized coal enters the sorting device and exits the LI tube 12, and the unqualified coal powder is centrifuged. After the stall is selected, it falls along the inner wall of the outer cone shell 27.
  • the ⁇ -motion adjustment mechanism includes a brake motor 23, a guide pulley 26, and each of the baffle shafts 19 passing through a dial 37 outside the outer cone shell and fixed opposite to the dial, the outer edge of the dial and the adjusting rod fixed to the same baffle shaft 19 are provided with a wire rope fixing device 22;
  • the shaft 19 is fixed in the sleeve 18 by a bearing 17, and the sleeve is welded to the outer cone and reinforced by the rib 16;
  • the output shaft of the brake motor 23 is fixed to the wire 24, and the wire 24 sequentially bypasses the dial 37.
  • the first baffle 6 and the secondary baffle 7 are both equipped with a
  • the brake motor 23 of the 6 or secondary baffle 7 is mounted on the primary baffle 6 or the secondary baffle plate Above the seventh, the two sides of the wire rope 24 with the brake motor 23 are respectively changed to a vertical direction by pulleys, and bypass the guide pulleys 26 on the sides of two adjacent dials 37, and the respective dials 37 and adjustment rods are sequentially connected. twenty one.
  • a balance block 25 for adjusting the yaw adjustment mechanism Y balance is fixed.
  • the foot end of the baffle adjusting rod 21 is connected with the baffle shaft 19, and the baffle adjusting rod 21 rotates to drive the baffle shaft 19 to rotate, thereby adjusting the opening degree of the first and second baffles 6, 7 to adjust the fineness of the pulverized coal. .
  • the top end of the baffle adjusting rod 21 is clamped in the fixing frame, and the card slot serves as a guide for facilitating the left and right rotation of the baffle adjusting rod.
  • the upper part of the baffle adjusting rod is connected with the wire rope 24, and the wire rope 24 is redirected by the guiding pulley 26 and Adjacent baffle adjustment levers are connected.
  • the top end of the last baffle adjustment lever 21 is connected to the brake motor 23 through the balance block 25, and the wire rope is driven by the motor forward and reverse, and the baffle adjustment lever is rotated to realize the baffle adjustment of the baffle, thereby adjusting the coal. Fineness.
  • the invention changes the current state of manual adjustment to the manual adjustment of the vertebral body in the prior art, greatly reduces the labor intensity of the baffle adjustment personnel, and facilitates the operation personnel to optimize the boiler combustion due to the unit load and the coal quality change. .
  • the top plate 38 at the top of the outer cone shell 27 is provided with a U-tube 12, and the other end of the U-tube is U-connected to the U-generator 14.
  • a U-tube 12 is provided, and the other end is open U to the 1J manifold 14, and the W-out tube 12 is spirally rotated in the direction of the airflow, and is connected to the U-tube 14.
  • the U-tube 12 of the sorting device with the LJ setting has a certain angle with the top plate 38 of the sorting device, the angle of the U-tube 12 is consistent with the direction of rotation of the pulverized coal, and after rotating a certain angle around the U-generator, it is welded with the U-generator 14 In order to reduce the U tube wear and resistance, improve the output of the milling system.
  • the air flour mixture is fed into the U tube 1 through the sorting device.
  • the flow rate decreases, part of the coal powder is sorted by gravity, and a part of the coarse coal in the remaining coal powder is sorted by colliding with the impact cone 4
  • the inner cone rotating variable frequency motor 11 drives the inner cone driven by the output shaft 9 to rotate as a whole, a part of the pulverized coal rotates with the axial flow vane blade 3, and some coarse granular coal powder is sorted and passed through the axial flow wing.
  • the air flour mixture of the type blade 3 passes through the first baffle 6 and the second stage After the baffle 7 is guided, part of the coarse-grained coal powder is sorted, and the remaining wind-pure mixture is sorted by the rotor rotor 10 composed of the blades, and a part of the coarse-grained coal powder is thrown to the outer cone shell, along the outer Under the conical shell, the qualified pulverized coal enters the net root out of the U-tube 12, mixes it into the U-generator 14 and enters the fine-powder separator.
  • the speed of the variable-frequency motor is adjustable, thus expanding the range of coal»fineness, i-week
  • the pulverized coal uniformity index a very small amount of qualified coal powder falls on the top cone 8, and slides along the top cone 8 - Bu-, coarse coarse coal powder and qualified coal powder mixture Cai to the 3 ⁇ 4 type blade of the axial flow machine,
  • the axial fan blade 3 rotates, which improves the kinetic energy of the selected pulverized coal. This greatly increases the probability of partial sorting of the qualified pulverized coal. Therefore, the sorting is improved.
  • the sorting efficiency of the device the back powder of the U-tube 15 back to the oblique back is sorted by the grinding gear disc, so that some of the unqualified powder is ground into the qualified coal powder, therefore, the powder is milled.
  • the device reduces the ratio of qualified pulverized coal in the powder returning, reduces the resistance, and mentions The separation efficiency, thereby improving the braking system output Weng, reducing system

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  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

一种档板自动调节高效串联双轴向动态分选、回粉碾磨装置，用于对风粉混合物气固两相流体进行分选。在外锥壳（27）与入口管（1）之间的环形空腔内安装有一圈对回粉进行分级碾磨的碾磨齿轮（34）；整体由变频电机（11）驱动旋转的内锥体（5）的下部外侧装有轴流机翼型叶片（3）；顶锥（8）外侧固定安装有进行离心分选的动叶转子（10）；一级挡板（6）和二级挡板（7）分别由档板自动调节机构控制调节档板开度。本发明采用风粉气固两相流体多级分选，回粉分级碾磨方式，大幅度提高了分选装置分选效率，进而大幅度提高了制粉系统出力，降低了制粉单耗，同时，大幅度扩大了煤粉细度调节范围和煤粉均匀性指数，因而大幅度提高了电站锅炉燃烧对煤质的适应能力。本发明也可应用于水泥、冶金、石化等行业的物料分选装置。

Description

档板自动调节高效串联双轴向动态分选、 回粉碾磨装置 技木
本发明涉及煤粉气固两相流体分选、囊磨装置， 具体说是一种档 板自动调节高效串联双轴向动态分选、 回粉碾磨装置。
背景技术
近几年， ώ于煤炭市场价格变化， 火力发电厂锅炉燃用煤质不但 较设计煤质相差甚远， 而且煤质变化频繁， 导致相同负荷锅炉燃煤量 时大时小， 进而引起制粉系统出力严重不足， 煤粉细度变粗， 严重影 响电站煤粉锅炉运行的安全性和经济性。为了提高制粉系统出力， 降 低钢球磨煤机制粉单耗，各种煤粉分选技术应运而生。在各种不同的 煤粉分选技术中， 串联双轴向粗粉分离器因其阻力小， 分选效率高， 在实际应用中得到了大力推广。但是， 它也存在着磨损严重、档板容 S积粉等问题。 随着动态分离技术的不断完善， 动态分离器 Η其具有 煤粉细度可调范围大、煤粉均匀性指数高等优点， 在中速磨煤机中被 广泛应用， 与此同时，动态分离技术也开始应用 Τ钢球磨煤机中储式 制粉系统。但是， 动态分离器也存在着磨制煤质变差时， 煤粉细度越 细， 使循环倍率增大， 分离效率降低， 阻力增大等问题， 从而限制了 动态分离技术的发展。
发明内容
本发明所耍解决的技术问题是为了解决上述提出的问题，提供一 种档板 Θ动调节高效串联双轴向动态分选、回粉碾磨装置。为了适应 电站锅炉负荷及燃用煤质变化，提高制粉系统出力，方便煤粉细度调 整， 木发明在串联双轴向分选技术的基础上， 结合动态分选技术， 捉 出一种全新的煤粉分选技术。该分选技术釆用了离心分选、重力分选 等多级分选技术， 对煤粉、 回粉进行多级分选， 分级碾磨， 以降低回 粉中合格煤粉的比率和循环倍率、提高分选效率； 同时， 采用导流板 技术、 轴流通风技术、 出 u管螺旋旋转设计， 以降低分选装置阻力， 从而达到提高制粉系统出力、 降低制粉单耗之目的。
所述档板自动调节高效串联双轴向动态分选、回¾碾磨装置，包 括分选装置入 U管、 内椎体、底部设有回粉出 L管的外锥壳； 在内锥 体中部高度沿所述外锥壳内部一周水平装有多个一级挡板，在所述一 级挡板之上还沿外锥壳内部水平装有一周二级 β板，所述一级 ¾板和 二级 ί3板均单端固定于档板轴上，档板轴穿出夕卜锥壳的外部装有调节 杆； 外锥壳的上部设多个防爆门， 外锥壳的顶板外装变频电机， 所述 顶板开 U并连接出 U总管，其特征是： 在所述分选装置入 IJ管外固定 安装有内轴承套固定管，在外锥壳与所述内轴承套固定管之间的环形 空腔内安装有一圈用于对回粉进行碾磨的 *磨齿轮，所述碾磨齿轮为 外大内小的锥体结构，碾磨齿轮内端与外端的齿轮轴分别通过碾磨装 置轴承装于内轴承套 0定管和外锥壳上，每相邻的两个碾磨齿轮相互 啮合， 其中一个碾磨齿轮的齿轮轴伸出外锥壳且 ¾碾磨变频电机带 动。
所述碾磨齿轮两端的碾磨装置轴承均设置有防止煤粉漏入轴承 的密封装置。
所述内锥体的撞击锥外侧装有轴流机翼型叶片。
所述内锥体的顶锥外侧固定安装有 ώ动叶片组成的动叶转了，以 此对煤粉进行 «心分选。
所述一级挡板和二级挡板分别由各 Θ的自动调节机构控制调节 挡板的开度， 所述 S动调节机构包括带刹车电动机、 导向滑轮， 每一 个档板轴在外锥壳外部固定一块与之 ¾直的刻度盘，所述刻度盘的外 缘与固定于同一个档板轴的调节杆之间设有钢丝绳固定装置；所述档 板轴固定丁-轴承的轴套内，轴套与外锥壳焊接并通过筋板加固； 所述 带刹车电动机的输出轴与钢丝绳固定，所述钢丝绳依次绕过刻度盘一 侧的导向滑轮、沿刻度盘外缘到铜丝绳固定装置、继续沿刻度盘外缘 到相邻刻度盘之间的导向滑轮， 分别串联整周的一级 ί3板或二级 ί3 板，最后回到带刹车电动机与钢丝绳固定的输出轴，形成封闭的一周 钢丝绳调节圈。 所述一级挡板或二级挡板的带刹车电动机安装于一级 ί3板或二 级裆板的上方，所述带刹车电动机所带的钢丝绳在所述电动机输出轴 的两侧水平走向，经过滑轮后改变为乖直走向， 并绕过两个相邻刻度 盘侧面的导向滑轮， 依次连接各个刻度盘和调节杆。
在所述钢丝绳在带刹车电动机两侧的垂直走向钢丝绳上，各固定 有一块调节 [¾动调节机构平衡度的平衡块。
所述顶板均匀分布有多个连接出 u管的开 υ ,所述出 u管的另一 端与出 u总管的输入端连接。
作为优化方案， 所述顶板上方设有 根出 u管， 且网根出 u管螺 旋旋转并与出 14总管连接。
所述内锥体上部外侧固定安装进行离心分选的动叶转子；所述内 锥体与所述一级¾板以及二级挡板之间均保留有间隙，内锥体为 ώ变 频电机的输出轴带动旋转的腔体。
本发明由动态分选装置、静态分选装置和回粉碾磨装置三部分组 成, 动态分选装置 ώ变频电动机， 内锥体及内锥体下端的轴流机翼型 叶片和上端动叶转了组成；静态分选装置 ώ外锥体、固定于外锥体的 两级档板， 以及档板 Θ动调节装置组成； 回粉碾磨装置由变频电机、 带减速箱连轴器、碾磨装置轴承、轴承套以及耐磨齿轮组组成。正常 工作时， 内椎体旋转变频电机驱动整个内锥旋转， 通过调节变频器频 率， 改变电动机转速， 调节内锥体旋转速度， 从而调节煤粉细度， 档 板处丁全开或某个免度，对风粉混合物起导向作用； 不合格煤粉沿分 选装置外壳内 ¾ 至设置于回粉收集管—卜部的耐磨齿轮组上，通过《 磨变频电机驱动耐磨齿轮转动，将回粉中部分不合格煤粉碾磨成合格 煤粉。如果动态分选出现故障， 可立即停止变频电动机， 启动档板 ή 动调节机构， 变动态分选为静态分选， 回粉疆磨装置部分自成一体， 可独立运行， 不受动态部分故障影响， 将制粉系统设备故障对锅炉运 行造成的影响降低至最低程度， 提高制 »系统设备的运行可靠性。
与现有的静态分选和动态分选装置相比较， 本发明的突出特点 为： 1、 内锥体为封闭腔体， 上部设置 ώ动叶组成的转了-， 对煤粉细 度进行最后一道分选， 下端部设置旋转轴流机翼型叶片， 对初入分选 装置的风粉混合物起着预分选作用，使部分粗颗粒煤»因离心作用而 被分选下来， 同时， 旋转的轴流机翼型叶片还会提高上端部被分选下 来的煤粉进入二次分选机会，使得部分被分选'卜来的合格煤粉进行二 次分选， 降低了循环倍率， 提高了分选效率。此外' 轴流机翼型叶片 还具有产生一定提升压头， 起到降低分选装置阻力的作用3
2、外锥壳两级档板均为单端固定， 档板轴釆用轴承与轴套固定， 使得档板转动灵活， 不会出现卡涩， 并采用密封技术， 确保轴承丄作 稳定。 轴套的固定筋板可保证档板工作稳定不变形。
3、 档板 5动调节机构釆用钢丝绳牵引档板《节连杆， 钢丝绳靠 导向滑轮改变方向， 实现档板 fi动调节， 从而自动调节煤粉细度。
分选装置出 u为 根管子， 最终 W根管了沿气流旋转方向旋 转一定角度后， 与出口管#接， 汇合为一根出 1J管， 降低合格煤粉的 旋转强度及阻力。
4、 档板、 轴流机翼型叶片釆用铸造方式， 磨损严重部位均采用 防磨处理， 减少磨损， 提高装置使用寿命
5、 本发明集中了串联双轴向静态分选装置和动态分选装置的优 点， 既可动态运行， 也可静态运行， 还可动静结合运行， 提高运行效 率和可靠性。
6、 回粉碾磨部分采用耐磨齿轮组， 将回粉中部分不合格煤粉通 过耐磨齿轮齿相互碾压碾磨成合格煤粉， 大幅度降低循环倍率， 提高 煤粉均匀性指数， H而大幅度提高了分选装置分选效率及制粉系统出 力。
7、 串联双轴向两级档板可 [¾动调节角度， 实现在动态分选装置 无法运行的情况下，对煤粉细度的 Θ动调整。满足电站锅炉负荷变化 及煤质变化对制粉系统出力及煤粉细度的耍求， 提高锅炉效率， 降低 滅氧化物排放量。
本发明的有益效果是釆用风粉气固两相流体多级分选，回粉分级 碾磨， 以大幅度提高分选装置分选效率， 进而提高制粉系统出力， 降 低制粉单耗， 同时， 扩大了煤粉细度调节范围， 大幅度提高了煤粉均 匀性指数，捉高了电站锅炉燃烧对煤质的适应能力。木发明也可应用 于水泥、 治金、 石化等行业的物料分选装置。
附图说明
圏 i 是木发明整体结构纵截面主视剖面團，
图 2 是回粉碾磨齿轮盘俯视放大图，
图 3 是单个碾磨齿轮与整体的连接构造图，
圏 4 是图 1中 A处放大图，
图 5是铛板 [¾动调节机构的展开状态示意图，
图 6是顶板处横截面剖面放大 K,
图 7是一级挡板或二级挡板横截面剖面放大图。
圏中： i一分选装置入 U1管， 2—扩锥， 3—轴流机翼型叶片， 4— 撞击锥， 5—内锥体， 6—一级档板， 7—二级档板， 8—顶锥， 9一输 出轴， 10—动叶转子， 11—内椎体旋转变频电机， 12—出 L4管， 13— 防爆门， 14一出 U总管， 15—斜向回粉出 U管， 16—筋板， 17—轴承， 18—轴套， 19一档板轴， 20—固定架， 21—调节杆， 22—钢丝绳固定 装置， 23—带刹车电动机， 24—钢丝绳， 25—平衡块， 26—导向滑轮， 27—外锥壳， 28—内轴承套固定管， 29—补轴承套 0定管， 30—碰磨 装置轴承， 31—碾磨变频电机， 32—带减速箱联轴器， 33—外端轴承 套， 34—碾磨齿轮， 35—齿轮轴， 36—内端轴承套， 37—刻度盘， 38— 顶板。
具体实施方式
下面结合附图对本发明进一步说明： 如图 1中所示， 所述档板 Θ 动调节高效 Φ联双轴向动态分选、回粉碾磨装置， 包括分选装置入 LI 管 1、 封闭内椎体 5、 回粉出 U管 15的外锥壳 27; 通常分选装置入 U管 1顶端带有扩锥 2，内锥体 5的底部带撞击锥 4且顶部带顶锥 8, 回粉出 U管 15与所述内椎体同轴， 安装于内锥体底部斜向出 L4。 沿 所述外锥壳 27内部一周装有多个一级挡板 6， 在所述一级挡板 6之 上还沿外锥壳 27内部装有一周二级裆板 7， 所述一级 ¾板 6和二级 挡板 7均单端固定于档板轴 19上， 档板轴穿出外锥壳外装有调节杆 21； 外锥壳的上部两侧设防爆门 13, 外锥壳的顶板 38外装内椎体旋 转变频电机 11 , 该变频电机的输出轴与带连轴器的减速箱连接， 减 速箱的输出轴穿过顶板与所述内椎体 5连接， 如图 2、 3， 在所述分 选装置入 U管 1外固定套有内轴承套固定管 28, 在外锥壳 27与所述 内轴承套固定管 28之间的环形空腔内安装有一圈对回粉进行分级碾 磨加工的碾磨齿轮 34， 所述碾磨齿轮 34为锥体结构， 其齿轮轴 35 内端与外端分别通过碾磨装置轴承 30装于内轴承套固定管 28和外锥 壳上， 相邻两个碾磨齿轮相互啮合， 其中一个碾磨齿轮 34的转轴经 过带减速箱眹轴器 32与碾磨变频电机 31的输出轴固定。增加该回粉 的碾磨盘可以高效率的大幅提高回毅的细度，使得分选系统在本装 S 内既己将所筛选的粗颗粒回粉再次碾磨，使大部分不合格回粉成为合 格煤粉。
如图 1 , 所述入 U管 1顶端设 扩锥 2, 所述扩锥 2与分选装置 入 U管 1顶端焊接， 风粉混合物通过流通面积逐渐变大的扩锥 2时， 速度降低而产生重力分选， 部分大颗粒煤粉因失速而被分选下来。 内 锥体 5设计为封闭空腔体， 套于外锥壳 27内， 并与外椎壳 27同轴， 内锥体、外锥壳之间为风粉混合物流动通道； 内锥体 5 ώ置于分选装 置顶部的内椎体旋转变频电机 11驱动旋转。
如图 2、 3, 回粉碾磨装置安装丁 ·斜向回粉出 U管 15位置， 采用 耐磨齿轮， 通过压碎和研碎对回粉进行碾磨。 在斜向回粉出 U管 15 位置布置一圈碾磨齿轮 34， 碾磨齿轮 34的一端通过碾磨装置轴承的 夕卜圈与外端轴承套 33和内端轴承套 36固定， 外端轴承套 33和内端 轴承套 36分别与外椎壳 27和内轴承套固定管 28焊接， 内轴承套固 定管 28与分选装置入 U管 1组成一个封闭腔体， 在该封闭腔体底端 通过管道与干净的仪用压縮空气管相连接，确保腔体内压力髙于斜向 回粉出 U管 15内压力。 碾磨变频电机 31通过带减速箱连轴器 32与 某一个碾磨齿轮 34连接， 调节变频器转速， 改变碾磨齿轮 34转速， 带动其余《磨齿轮转动， 将部分不合格回粉碾磨成合格煤粉。
所述碾磨齿轮 34两端的碾磨装置轴承 30均安装于所述环形空腔 之外, 以使碾磨装置轴承 30减少粉尘的污染。
如图 1， 所述内锥体 5的下部外侧装有轴流机翼型叶片 3。
内锥体下端设置轴流机翼型叶片，通过轴流机翼型叶片 3旋转带 动风粉混合物旋转， 部分粗颗粒煤粉因离心分离作用被抛至外锥壳 27 内禮而产生离心分选， 同时， 由于叶片旋转对风粉混合物的提速 作用使得部分被分选-卜 '来的合格煤粉有机会参与二次分选，降低循环 倍率、 提高分选效率， 并提升分选装置压头、 降低分选装置阻力。
如图 1， 所述内锥体 5的顶锥 8外侧固定安装有进行离心分选的 动叶转子 10。
内锥体 5上端设置有可转动的动叶转了 10, 对经过多级分选的 煤粉做最后离心分选， 合格煤粉进入分选装置出 LI管 12, 不合格煤 粉因离心分选失速后沿外锥壳 27内壁落下。
如图 4、 5、 7, 所述一级 S板 6和二级挡板 7 动调节机构控 制调节偏转方向， 所述 β动调节机构包括带刹车电动机 23、 导向滑 轮 26,每一个档板轴 19在外锥壳外部穿过一块刻度盘 37, 并与该刻 度盘相对固定， 所述刻度盘的外缘与固定于同一个档板轴 19的调节 杆设有钢丝绳固定装置 22; 所述档板轴 19通过轴承 17固定于轴套 18内， 轴套与外锥壳焊接并通过筋板 16加固； 所述带刹车电动机 23 的输出轴与钢丝绳 24固定， 所述钢丝绳 24依次绕过刻度盘 37—侧 的导向滑轮 26、 沿刻度盘 37外缘到钢丝绳固定装置 22、 沿刻度盘 37外缘到相邻刻度盘 37同侧的导向滑轮 26,分别 Φ联整周的一级 ί3 板 6或二级挡板 7， 最后回到带刹车电动机 23与钢丝绳 24固定的输 出轴， 形成封闭一周钢丝绳调节圈。
所述一级档板 6和二级挡板 7都安装有 |¾动调节机构，一级挡板 6和二级档板 7的自动调节机构各有一个带刹车电动机 23,该一级档 板 6或二级挡板 7的带刹车电动机 23安装于一级挡板 6或二级 ¾板 7的上方， 所述带刹车电动机 23所带的钢丝绳 24两侧经过滑轮分别 改变为垂直走向， 并绕过两个相邻刻度盘 37侧面的导向滑轮 26， 依 次连接各个刻度盘 37和调节杆 21。
在所述钢丝绳 24在带刹车电动机 23两侧的垂 走向钢丝绳上， 各固定有一块调节 Θ动调节机构 Y:衡度的平衡块 25。
档板调节杆 21脚端与档板轴 19 Η定连接， 档板调节杆 21转动 可带动档板轴 19转动， 从而调节一、 二级档板 6、 7开度达到调节煤 粉细度目的。 档板调节杆 21顶端夹在固定架卡榴内， 卡槽起导向作 用， 便于档板调节杆左右旋转， 同时， 档板调节杆上部与钢丝绳 24 连接，钢丝绳 24通过导向滑轮 26改变方向并与相邻的档板调节杆连 接。 以此类推，最后的档板调节杆 21顶端通过平衡块 25与带刹车电 动机 23连接， 通过电动机正、 反转， 带动钢丝绳， 牵动档板调节杆 转动， 实现档板 β动调节， 从而调节煤粉细度。此发明一改现有技术 中需耍人工攀爬到椎体上遝个手动调节的现状，大大减轻了档板调节 人员劳动强度，方便运行人员因机组负荷和煤质变化对锅炉燃烧进行 优化调整。
如图 6， 在所述外锥壳 27顶部的顶板 38设有出 U管 12， 所述出 U管另一端开 U于出 U总管 14。
所述顶板 38上方设有 根出 U管 12, 另一端全部开 U于出 1J总 管 14, 且 W根出 i」管 12顺气流方向螺旋旋转， 并与出 U总管 14连 接。
分选装置出 LJ设置的 根出 U管 12与分选装置顶板 38有一定夹 角， 其夹角与煤粉旋转方向一致， 并绕出 U总管旋转一定角度后， 与 出 U总管 14焊接， 以减少出 U管磨损和阻力， 提髙制粉系统出力。
风粉混合物经分选装置入 U管 1 ,因扩锥 2面积增大，流速降低， 部分煤粉因重力被分选，剩余煤粉中的一部分粗煤精因与撞击锥 4碰 撞而被分选， 由于内椎体旋转变频电机 11驱动输出轴 9带动的内锥 体整体旋转，一部份煤粉随轴流机翼型叶片 3旋转， 部分粗颗粒煤粉 被分选，通过轴流机翼型叶片 3的风粉混合物经过一级档板 6与二级 档板 7导向后， 部分粗颗粒煤粉被分选， 剩余风精混合物经过由叶片 组成的动叶转子 10旋转而被分选，一部份粗颗粒煤粉被摔至外锥壳, 沿外锥壳 下， 合格煤粉进入网根出 U管 12, 混合于出 U总管 14后 进入细粉分离器， ώ于变频电动机转速可调， 因此, 扩大了煤»细度 可 i周范围， 提高了煤粉均匀性指数， 极少量合格煤粉落于顶锥 8, 并 沿顶锥 8滑—卜- , 粗颗粒煤粉与合格煤粉混合物蔡至轴流机 ¾型叶片 3 处时， 因轴流机翼型叶片 3旋转， 提升了部分被分选下来的合格煤粉 动能， 这样， 大大增加了部分被分选下来的合格煤粉进行二次分选的 几率， 因此， 提高了分选装置的分选效率； 回、 至斜向回粉出 U管 15 的回粉经过碾磨齿轮盘进行分级 «磨， 使得部分不合格回粉被碾 磨成合格煤粉， 因此， 回粉碾磨装置降低了回粉中合格煤粉的比率， 降低了阻力， 提高了分选效率， 进而提高了制翁系统出力， 降低了制

Claims

权利 要 求 书
1.一种档板 Θ动调节高效串联双轴向动 ¾分选、 回粉碾磨装置， 包括分选装置入 i」管 （1)、 内椎体（5)、 底部设有回粉出 LJ管 （15) 的外锥壳 （27); 在内锥体中部高度沿所述外锥壳 （27) 内部一周水 Ψ装有多个一级档板（6)，在所述一级 ί3板（6)之上还沿外锥壳（27) 内部水、:装有一周二级裆板（7),所述一级挡板（6)和二级挡板（7) 均单端固定于档板轴（19)上， 档板轴穿出外锥壳的外部装有调节杆
(21)； 外锥壳的上部设多个防爆门 （13)， 外锥壳的顶板 (38)外装 变频电机（11), 所述顶板 (38)开 LI并连接出 1J总管（14), 其特征 是：
在所述分选装置入 U管（1 )外固定安装有内轴承套固定管（28), 在外锥壳 (27)与所述内轴承套固定管 (28)之间的环形空腔内安装 有一圈用丁-对回粉进行碾磨的碾磨齿轮 (34)， 所述碾磨齿轮 (34) 为外大内小的锥体结构， 碾磨齿轮内端与外端的齿轮轴（35)分别逋 过碾磨装置轴承 (30)装于内轴承套固定管 (28)和外锥壳 (27)上， 每相邻的两个碾磨齿轮（34)相互啮合， 其中一个碾磨齿轮（34) 的 齿轮轴 （35) 伸出外锥壳 （27) 且 ώ碼磨变频电机 （31) 带动。
2. 根据权利耍求 1所述的档板 动 i駕节高效串联双轴向动态分 选、 回粉碾磨装置， 其特征是： 所述職磨齿轮 (34)两端的職磨装置 轴承 （30) 均设置有防止煤粉漏入轴承的密封装置。
3. 根据权利耍求 1所述的档板 Θ动调节高效串联双轴向动 ¾分 选、 回粉碾磨装置， 其特征是： 所述内锥体（5) 的撞击锥（4)外侧 装有轴流机翼型叶片 （3)。
4. 根据权利耍求 1或 3所述的档板 Θ动调节高效串联双轴向动 态分选、 回粉碾磨装置， 其特征是： 所述内锥体 (5) 的顶锥（8)外 侧固定安装有由动叶片组成的动叶转了 (10), 以此对煤粉进行离心 分选。
5. 根据权利耍求 1所述的档板 S动调节高效串联双轴向动态分 选、 回粉碾磨装置， 其特征是： 所述一级 ί3板 （6)和二级挡板 （7 ) 分别由各自的 β动调节机构控制调节裆板的开度，所述自动调节机构 包括带刹车电动机（23)、 导向滑轮（26), 每一个档板轴 （19)在外 锥壳外部固定一块与之乖直的刻度盘 （37)， 所述刻度盘的外缘与固 定于同一个档板轴（19)的调节杆 (21 )之间设有钢丝绳固定装置 (22); 所述档板轴 （19) 固定丁轴承（17 ) 的轴套（18 ) 内， 轴套与外锥壳 焊接并通过筋板（16)加固； 所述带刹车电动机（23 ) 的输出轴与钢 丝绳（24) 固定， 所述钢丝绳（24)依次绕过刻度盘（37)—侧的导 向滑轮（26)、 沿刻度盘（37)外缘到钢丝绳固定装置 （22)、 继续沿 刻度盘 (37 ) 外缘到相邻刻度盘 (37) 之间的导向滑轮 (26) , 分别 Φ联整周的一级挡板 （6) 或二级 ¾板 （7)， 最后回到带刹车电动机 (23 )与钢丝绳（24)固定的输出轴，形成封闭的一周钢丝绳调节圈。
6. 根据权利耍求 5所述的档板 S动调节高效串联双轴向动态分 选、 回粉碾磨装置， 其特征是： 所述一级铛板 C6) 或二级 ¾板 （7 ) 的带刹车电动机（23 )安装 Τ·一级¾板（6)或二级 ¾板（7)的上方, 所述带刹车电动机（23 )所带的钢丝绳（24)在所述电动机输出轴的 两侧水平走向， 经过滑轮后改变为乖直走向， 并绕过两个相邻刻度盘
(37) 侧面的导向滑轮 （26)， 依次连接各个刻度盘 （37) 和调节杆 (21 )。
7. 根据权利耍求 6所述的档板 Θ动调节高效串联双轴向动态分 选、 回粉碾磨装置， 其特征是： 在所述钢丝绳（24)在带刹车电动机
(23 )两侧的 il直走向钢丝绳上， 各固定有一块调节 t¾动调节机构平 衡度的平衡块 （25)。
8. 根据权利耍求 1所述的档板 fi动调节高效串联双轴向动态分 选、 回粉爆磨装置， 其特征是： 所述顶板 (38 )均匀分布有多个连接 出 U管 （12) 的开 LJ , 所述出 U管 （12 ) 的另一端与出 U总管 （14 ) 的输入端连接。
9. 根据权利耍求 8所述的档板白动调节高效 Φ联双轴向动态分 选、 回粉碾磨装置， 其特征是： 所述顶板（38)上方设有网根出 L4管 (12), 且 τ [根出 U管 （12) 螺旋旋转并与出 U总管 （14)连接 10.根据权利耍求 1所述的档板 S动调节高效串联双轴向动态分 选、 回粉碾磨装置， 其特征是： 所述内锥体 （5) 上部外侧固定安装 进行离心分选的动叶转子（10 )；所述内锥体（ 5 )与所述一级挡板（ 6 ) 以及二级挡板（7)之间均保留有间隙， 内锥体（5)为由变频电机（11) 的输出轴 （9) 带动旋转的腔体。
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