WO2018035983A1 - 新型的自动排铁式立磨磨盘及排难磨物料方法 - Google Patents

新型的自动排铁式立磨磨盘及排难磨物料方法 Download PDF

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Publication number
WO2018035983A1
WO2018035983A1 PCT/CN2016/105290 CN2016105290W WO2018035983A1 WO 2018035983 A1 WO2018035983 A1 WO 2018035983A1 CN 2016105290 W CN2016105290 W CN 2016105290W WO 2018035983 A1 WO2018035983 A1 WO 2018035983A1
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grinding disc
iron
vertical grinding
stepped hole
grind
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PCT/CN2016/105290
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English (en)
French (fr)
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王金东
王宝平
罗波
韩纯
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江苏海建股份有限公司
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Publication of WO2018035983A1 publication Critical patent/WO2018035983A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • 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
    • B02C15/003—Shape or construction of discs or rings
    • 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

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  • the invention relates to the technical field, and in particular to a novel automatic iron-discharge type vertical grinding disc.
  • the vertical mill integrates crushing, drying, grinding and grading and conveying.
  • the motor drives the grinding disc to rotate through the reducer, and the material falls from the feeding opening to the center of the grinding disc, and moves to the edge of the grinding disc under the action of centrifugal force and is ground.
  • Rolling of the roller the pulverized material overflows from the edge of the grinding disc, and is brought to the high-efficiency classifier integrated with the vertical mill by the high-speed upward hot air flow from the wind ring, and the coarse powder is sorted by the separator and returned to the grinding disc.
  • Re-grinding the fine powder is ground with the airflow and collected in the system dust collecting device, which is the product.
  • the friction between the material and the grinding disc can easily lead to the wear of the grinding wheel, especially the materials which are relatively easy to grind and have high iron content.
  • the iron in these materials is often spherical.
  • the form of the particles is encapsulated in the material, such as slag, nickel slag, and the like. After being squeezed by the grinding roller, these spherical particles are released. If they cannot be discharged in time, they are always free between the rollers, which causes the roller to wear greatly, which seriously affects the normal operation of the equipment and increases the operating cost of the equipment. .
  • the existing application number is CN201120165774.1, the name is an external circulation iron removal grinding equipment, the vertical drive shaft is connected with a high pressure grinding roller, the high pressure grinding roller is set on the wear grinding disc, and the upper part of the powder selection chamber is the powder selection area.
  • the air separation outdoor side is uniformly distributed with four cyclones, the upper part of the cyclone separator is connected with the upper part of the powder separation chamber, the bottom part of the cyclone separator is provided with a fine powder collector, and the middle coarse powder collecting cone is arranged below the powder selection area, and the high pressure is high.
  • the air inlet of the fan is arranged at the bottom end of the powder selection chamber, and one end of the return air duct is connected to the high pressure fan, and the other end is connected with the top end of the cyclone separator.
  • the crushing bed grinding technology and the external circulation iron removal process are used to realize the powder classification inside the equipment, and the iron impurities in the powder are eliminated in time, thereby reducing the loss of steel.
  • the traditional vertical grinding disc is rotated, the grinding roller is driven to the grinding disc, and the grinding roller is rolled.
  • the powder is graded inside the device, and the working efficiency is high and the fine crushing performance is good.
  • the existing application number is CN201110133455.7, the name is an external circulation iron removal grinding process, which belongs to a grinding process, external circulation iron removal grinding process and grinding, iron removal and grading equipment as one, through grinding
  • the pressed material is blown up by the high-speed airflow, it is sorted at the vortex classification.
  • the fine powder is collected by the airflow to the four cyclone separators distributed around, and the coarse powder is slid along the pipeline to the outside of the mill.
  • the valve enters the lower pipe separator, the iron impurities separated by the iron remover are discharged from the slag discharge port, and the rest of the material enters the circulation hoist and is fed into the mill for grinding.
  • the powder is realized inside the equipment by using the crushing bed grinding technology and the external circulation iron removal process. Grading, and timely removing iron impurities in the powder, thereby reducing the loss of steel.
  • the traditional vertical grinding disc is rotated, the grinding roller is changed to the grinding disc, the grinding roller is rolled, the powder is graded inside the equipment, the working efficiency is high, the fine crushing performance is good, the abrasion is small, the energy consumption is low, the investment is saved, and the maintenance is safe. simple.
  • the present invention provides the automatic iron-discharge type vertical grinding disc, which overcomes the deficiencies of the existing vertical grinding roller technology, and provides a vertical grinding machine which is slag-discharged and wear-resistant in time. Machine technology.
  • the technical scheme adopted by the invention is: a novel automatic iron-discharge type vertical grinding disc, comprising a stepped hole passing through the upper end of the vertical grinding disc and the retaining ring, wherein the retaining ring is placed above the vertical grinding disc, the ladder A plugable iron outlet pin is arranged in the hole, and a wind channel is further arranged on the vertical grinding disc, and a scraping plate is further arranged above the air duct; the scraping plate extends into the air duct to remove the hard-wearing material in the stepped hole Scrape out the vertical mill.
  • the stepped hole is gradually decreased from the retaining ring to the vertical grinding disc, and the iron discharging pin is disposed in the stepped hole.
  • the iron outlet pin has a stepped structure, and an outer surface of the outer surface is provided with a hardfacing layer.
  • the scraper plate is driven by the scraping motor, and the scraping motor is connected to the control device of the vertical grinding disc, and the control device of the vertical grinding disc controls the working state of the scraping motor.
  • a separator is disposed outside the air passage adjacent to the vertical grinding disc.
  • the method for eliminating difficult-to-grind materials by using the vertical grinding disc of the above structure firstly, processing a stepped hole on the circumference of the vertical grinding disc on the upper end of the retaining ring, and blocking the iron pin in the stepped hole;
  • the tool is used to take out the iron outlet pin from the vertical grinding disc, so that the hard-wearing material and the spherical iron particles exposed by the roller are in the
  • the action of the centrifugal force is distributed to the inner diameter position of the retaining ring; when the material moves along the circumferential direction, it passes through the stepped iron hole and slides down into the air duct, and is discharged outside the grinding machine by the scraping plate, and is timely divided by the iron remover. Pull out the production line; when grinding other materials with good grindability and materials with little iron, install a special iron outlet pin, which does not affect the normal operation of the equipment.
  • the invention has the beneficial effects that the novel automatic iron-distributing vertical grinding disc of the invention processes the stepped hole on the circumference of the vertical grinding disc and the retaining ring, and is used in the step.
  • the pin is blocked.
  • the stepped hole is opened, so that the hard-wearing material is distributed to the inner diameter position of the retaining ring by the centrifugal force, and the material moves along the circumferential direction.
  • it falls into the air duct and is discharged outside the grinding machine by the scraping plate, thereby prolonging the service life of the grinding disc and the grinding roller.
  • FIG. 1 is a schematic structural view of an embodiment of a novel automatic iron-discharge type vertical grinding disc
  • FIG. 2 is a three-dimensional structural view of the iron outlet pin of the embodiment of FIG. 1;
  • FIG. 3 is a three-dimensional structural view of the iron outlet pin and the stepped hole of the embodiment of FIG. 2 on a vertical grinding disc;
  • 1- vertical grinding disc 2-block ring, 3-step hole, 4-row iron pin, 5-air duct, 6-scraping board, 7-iron remover, 8-scraper motor, 9- Wear-resistant surfacing layer, 10-hard-to-grind material.
  • the novel automatic iron-discharge type vertical grinding disc comprises a stepped hole 3 passing through the upper grinding opening of the vertical grinding disc 1 and the retaining ring 2, wherein the retaining ring 2 is placed above the vertical grinding disc 1
  • the stepped hole 3 is provided with a plugable iron outlet pin 4, and the vertical grinding disc 1 is further provided with a duct 5, and a scraper plate 6 is further disposed above the air duct 5; the scraping plate 6 extends into the duct 5 Therefore, the hard-to-grind material 10 excluded from the stepped hole 3 is scraped out of the vertical mill, and the reason why the step hole 3 is set in the present application is mainly for the difficult-to-grind material 10 to be easily separated from the vertical grinding disc when it is excluded.
  • the stepped hole 3 is decremented from the retaining ring 2 to the vertical grinding disc 1, and the iron discharging pin 4 is disposed in conformity with the stepped hole 3, thereby ensuring the vertical grinding when grinding the easily grinded material. Block the stepped hole 3 to avoid material waste.
  • the scraping plate 6 is driven by the scraping motor 8, and the scraping motor 8 is connected to the control device of the vertical grinding disc, and the control device of the vertical grinding disc controls the working state of the scraping motor 8, thereby further improving the automation degree of the vertical grinding of the iron discharging , the effect is better.
  • the iron remover 7 is also arranged on the outer side of the air duct 5 close to the vertical grinding disc 1, and the automatic effect is stronger.
  • the iron outlet pin 4 has a stepped structure, and an outer surface of the wearable weld layer 9 is provided on the outer surface thereof for a long service life.
  • the method for eliminating difficult-to-grind materials by using the vertical grinding disc of the above structure firstly, processing a stepped hole on the circumference of the vertical grinding disc on the upper end of the retaining ring, and blocking the iron pin in the stepped hole;
  • the tool is used to take out the iron outlet pin from the vertical grinding disc, so that the hard-wearing material and the spherical iron particles exposed by the roller are in the
  • the action of the centrifugal force is distributed to the inner diameter position of the retaining ring; when the material moves along the circumferential direction, it passes through the stepped iron hole and slides down into the air duct, and is discharged outside the grinding machine by the scraping plate, and is timely divided by the iron remover. Pull out the production line; when grinding other materials with good grindability and materials with little iron, install a special iron outlet pin, which does not affect the normal operation of the equipment.
  • the novel automatic iron-discharge type vertical grinding disc of the invention processes a stepped hole on the circumference of the vertical grinding disc and the retaining ring, and is blocked by the stud in the step.
  • the stepped hole is opened, so that the hard-wearing material is distributed to the inner diameter position of the retaining ring by the centrifugal force, and the material moves along the circumferential direction.
  • it falls into the air duct and is discharged outside the grinding machine by the scraping plate, thereby prolonging the service life of the grinding disc and the grinding roller.

Abstract

一种自动排铁式立磨磨盘，包括贯通立磨磨盘（1）和挡料圈（2）的上止口处的阶梯孔（3），其中挡料圈置于立磨磨盘的上方，阶梯孔内放置可插拔的排铁口销（4），立磨磨盘上还设有风道（5），风道上方还设有刮料板（6）；刮料板伸入风道内，从而将阶梯孔内排除的难磨物料（10）刮出立磨。以及一种使用立磨磨盘排除难磨物料的方法，在立磨粉磨难磨的物料，打开阶梯孔，使得难磨物料在离心力的作用，分布到挡料圈的内径位置，当物料沿着圆周方向运动时，通过阶梯孔，落到风道内，在刮料板的作用下排出磨外，从而延长磨盘、磨辊的使用寿命。

Description

新型的自动排铁式立磨磨盘及排难磨物料方法 技术领域
本发明涉及技术领域，特别是涉及新型的自动排铁式立磨磨盘。
背景技术
本的立式磨机，集破碎、干燥、粉磨、分级输送于一体，电动机通过减速机带动磨盘转动，物料从下料口落到磨盘中央，在离心力的作用下向磨盘边缘移动并受到磨辊的碾压，粉碎后的物料从磨盘边缘溢出，同时被来自风环高速向上的热气流带至与立磨一体的高效选粉机内，粗粉经分离器分选后返回到磨盘上，重新粉磨；细粉则随气流出磨，在系统收尘装置中收集下来，即为产品。
传统的立磨在生产工作过程中，物料与磨盘之间摩擦，容易导致磨盘磨辊的磨损，尤其是粉磨比较易磨性差、含铁量高的物料，这些物料中的铁往往是球形小颗粒的形态被包裹在物料里面的，如矿渣、镍渣等。经过磨辊磨盘的挤压，这些球形颗粒被释放出来，如果不能及时排出磨外，始终游离于辊盘之间，造成辊盘磨损很大，严重影响设备的正常运转，加大了设备运行成本。
现有的申请号为CN201120165774.1，名称为一种外循环除铁粉磨设备，立式传动轴上接高压磨辊，高压磨辊设在耐磨磨盘上，选粉室上部为选粉区，选粉室外侧均布四个旋风分离器，旋风分离器上部与选粉室上部相连通，旋风分离器底端设有细粉收集器，选粉区下方设有中粗粉收集锥，高压风机的进风口设在选粉室底端，回风管道一端接高压风机，另一端分别与旋风分离器顶端相连接。采用碾压料床粉磨技术和外循环除铁工艺，在设备内部实现粉体分级，并及时将粉料中的铁杂质排除，从而降低了钢铁的损耗。将传统的立磨磨盘转动、磨辊从动改为磨盘不动、磨辊滚动，在设备内部实现粉体分级，工作效率高、细碎性能好。
现有的申请号为CN201110133455.7，名称为一种外循环除铁粉磨工艺，属于一种粉磨工艺，外循环除铁粉磨工艺兼粉磨、除铁与分级设备为一体，经碾压后的分料被高速气流吹起后在涡流分级处被分选，细粉被气流带至四周均布的四只旋风分离器后收集，中粗粉沿管道溜至磨外，经锁风阀后进入下方的管道除铁器，经除铁器分离出的铁杂质由排渣口排出，其余物料进入循环提升机，再喂入磨内进行粉磨。采用碾压料床粉磨技术和外循环除铁工艺，在设备内部实现粉体 分级，并及时将粉料中的铁杂质排除，从而降低了钢铁的损耗。将传统的立磨磨盘转动、磨辊从动改为磨盘不动、磨辊滚动，在设备内部实现粉体分级，工作效率高、细碎性能好、磨耗小、能耗低、投资省、维护安全简单。
上述专利申请指出了排除铁渣的方法和装置，但是在实际使用时，由于上述结构和方法相对复杂，会增加磨粉的成本，并且辊盘磨损仍然较大，影响设备的正常运转，并且加大了设备运行成本。
发明内容
为了克服上述现有技术的不足，本发明提供了本的自动排铁式立磨磨盘，克服现有立磨磨辊技术的不足之处，提供一种及时排渣、更加耐磨的立式磨机技术。
本发明所采用的技术方案是：新型的自动排铁式立磨磨盘，包括贯通立磨磨盘和挡料圈的上止口处的阶梯孔，其中挡料圈置于立磨磨盘的上方，阶梯孔内放置可插拔的排铁口销，立磨磨盘上还设有风道，风道上方还设有刮料板；刮料板伸入风道内，从而将阶梯孔内排除的难磨物料刮出立磨。
进一步地，阶梯孔从挡料圈至立磨磨盘的方向递减，排铁口销贴合阶梯孔设置。
进一步地，排铁口销为阶梯形结构，并且其外表面上还设有耐磨堆焊层。
进一步地，刮料板通过刮料电机驱动，并且刮料电机连接立磨磨盘的控制装置，立磨磨盘的控制装置控制刮料电机的工作状态。
进一步地，靠近立磨磨盘的风道外侧还设有除铁器。
使用上述结构的立磨磨盘排除难磨物料的方法，首先，在立磨磨盘靠挡料圈上止口处的圆周上加工出阶梯孔，并在阶梯孔内用排铁口销堵住；在立磨粉磨难磨的物料，或者物料中铁等难磨成份含量比较高时，使用工具从立磨磨盘上取出排铁口销，使得难磨物料和经辊盘挤压露出的球形铁质颗粒在离心力的作用，分布到挡料圈的内径位置；当物料沿着圆周方向运动时，通过阶梯排铁孔上方，滑落到风道内，在刮料板的作用下排出磨外，通过除铁器及时分捡出生产线；在粉磨其它易磨性好的物料、物料中含铁很少时，就装上专用排铁口销，不影响设备的正常运转。
与现有技术相比，本发明的有益效果是：本发明的新型的自动排铁式立磨磨盘，在立磨磨盘、靠挡料圈处圆周上，加工出阶梯孔，并在阶梯内用柱销堵住。在立磨粉磨难磨的物料，或者物料中铁等难磨成份含量比较高时，打开阶梯孔，使得难磨物料在离心力的作用，分布到挡料圈的内径位置，当物料沿着圆周方向运动时，通过阶梯孔，落到风道内，在刮料板的作用下排出磨外，从而延长磨盘、磨辊的使用寿命。
附图说明
图1为新型的自动排铁式立磨磨盘的一个实施例的结构示意图；
图2为图1的实施例的排铁口销的三维结构示意图；
图3为图2的实施例的排铁口销与阶梯孔在立磨磨盘上的三维结构示意图；
其中：1-立磨磨盘，2-挡料圈，3-阶梯孔，4-排铁口销，5-风道，6-刮料板，7-除铁器，8-刮料电机，9-耐磨堆焊层，10-难磨物料。
具体实施方式
为了加深对本发明的理解，下面结合附图和实施例对本发明进一步说明，该实施例仅用于解释本发明，并不对本发明的保护范围构成限定。
如图1所示，新型的自动排铁式立磨磨盘，包括贯通立磨磨盘1和挡料圈2的上止口处的阶梯孔3，其中挡料圈2置于立磨磨盘1的上方，阶梯孔3内放置可插拔的排铁口销4，立磨磨盘1上还设有风道5，风道5上方还设有刮料板6；刮料板6伸入风道5内，从而将阶梯孔3内排除的难磨物料10刮出立磨，而本申请中之所以设置为阶梯孔3，主要是为了难磨物料10在排除时，容易脱离立磨磨盘。
图1中还可以看出，阶梯孔3从挡料圈2至立磨磨盘1的方向递减，排铁口销4贴合阶梯孔3设置，从而保证立磨在磨易磨碎的物料时，将阶梯孔3堵住，避免物料浪费。刮料板6通过刮料电机8驱动，并且刮料电机8连接立磨磨盘的控制装置，立磨磨盘的控制装置控制刮料电机8的工作状态，从而进一步提高该排铁立磨的自动化程度，使用效果更佳。靠近立磨磨盘1的风道5外侧还设有除铁器7，自动效果更强。
结合图1和图2可以看出，排铁口销4为阶梯形结构，并且其外表面上还设有耐磨堆焊层9，具有较长的使用寿命。
使用上述结构的立磨磨盘排除难磨物料的方法，首先，在立磨磨盘靠挡料圈上止口处的圆周上加工出阶梯孔，并在阶梯孔内用排铁口销堵住；在立磨粉磨难磨的物料，或者物料中铁等难磨成份含量比较高时，使用工具从立磨磨盘上取出排铁口销，使得难磨物料和经辊盘挤压露出的球形铁质颗粒在离心力的作用，分布到挡料圈的内径位置；当物料沿着圆周方向运动时，通过阶梯排铁孔上方，滑落到风道内，在刮料板的作用下排出磨外，通过除铁器及时分捡出生产线；在粉磨其它易磨性好的物料、物料中含铁很少时，就装上专用排铁口销，不影响设备的正常运转。
本发明的新型的自动排铁式立磨磨盘，在立磨磨盘、靠挡料圈处圆周上，加工出阶梯孔，并在阶梯内用柱销堵住。在立磨粉磨难磨的物料，或者物料中铁等难磨成份含量比较高时，打开阶梯孔，使得难磨物料在离心力的作用，分布到挡料圈的内径位置，当物料沿着圆周方向运动时，通过阶梯孔，落到风道内，在刮料板的作用下排出磨外，从而延长磨盘、磨辊的使用寿命。
本发明的实施例公布的是较佳的实施例，但并不局限于此，本领域的普通技术人员，极易根据上述实施例，领会本发明的精神，并做出不同的引申和变化，但只要不脱离本发明的精神，都在本发明的保护范围内。

Claims (6)

  1. 新型的自动排铁式立磨磨盘，其特征在于：包括贯通立磨磨盘(1)和挡料圈(2)的上止口处的阶梯孔(3)，其中所述挡料圈(2)置于立磨磨盘(1)的上方，所述阶梯孔(3)内放置可插拔的排铁口销(4)，所述立磨磨盘(1)上还设有风道(5)，所述风道(5)上方还设有刮料板(6)；所述刮料板(6)伸入风道(5)内，从而将阶梯孔(3)内排除的难磨物料(10)刮出立磨。
  2. 根据权利要求1所述的新型的自动排铁式立磨磨盘，其特征在于：所述阶梯孔(3)从挡料圈(2)至立磨磨盘(1)的方向递减，所述排铁口销(4)贴合阶梯孔(3)设置。
  3. 根据权利要求2所述的新型的自动排铁式立磨磨盘，其特征在于：所述排铁口销(4)为阶梯形结构，并且其外表面上还设有耐磨堆焊层(9)。
  4. 根据权利要求1所述的新型的自动排铁式立磨磨盘，其特征在于：所述刮料板(6)通过刮料电机(8)驱动，并且所述刮料电机(8)连接立磨磨盘的控制装置，立磨磨盘的控制装置控制刮料电机(8)的工作状态。
  5. 根据权利要求1所述的新型的自动排铁式立磨磨盘，其特征在于：靠近立磨磨盘(1)的风道(5)外侧还设有除铁器(7)。
  6. 使用权利要求1-5任意一项的立磨磨盘排除难磨物料的方法，其特征在于：首先，在立磨磨盘靠挡料圈上止口处的圆周上加工出阶梯孔，并在阶梯孔内用排铁口销堵住；
    在立磨粉磨难磨的物料，或者物料中铁等难磨成份含量比较高时，使用工具从立磨磨盘上取出排铁口销，使得难磨物料和经辊盘挤压露出的球形铁质颗粒在离心力的作用，分布到挡料圈的内径位置；
    当物料沿着圆周方向运动时，通过阶梯排铁孔的上方，滑落到风道内，在刮料板的作用下排出磨外，通过除铁器及时分捡出生产线；
    在粉磨其它易磨性好的物料、物料中含铁很少时，就装上专用排铁口销，不影响设备的正常运转。
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