WO2017219617A1 - 一种基于磁场改变磨机磨介运动轨迹的装置和方法 - Google Patents

一种基于磁场改变磨机磨介运动轨迹的装置和方法 Download PDF

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WO2017219617A1
WO2017219617A1 PCT/CN2016/108881 CN2016108881W WO2017219617A1 WO 2017219617 A1 WO2017219617 A1 WO 2017219617A1 CN 2016108881 W CN2016108881 W CN 2016108881W WO 2017219617 A1 WO2017219617 A1 WO 2017219617A1
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coil
magnetic field
degrees
changing
mill
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French (fr)
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彭玉兴
李同清
朱真才
邹声勇
史志远
刘送永
陈松战
徐杰
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China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism

Definitions

  • the invention relates to a device and a method for changing the grinding motion of a grinding machine based on a magnetic field, and is particularly suitable for the experimental simulation and research of the movement law of the grinding medium in the ball mill.
  • the study of the kinematic characteristics of grinding media is the core of analyzing and optimizing the performance of the mill, which directly affects the particle size distribution, power consumption, wear and steel consumption of the mill. As the diameter of the ball mill drum increases, it is impossible to effectively simulate the internal complex motion process and the impact collision process.
  • the most common method is to build a laboratory-scale small mill based on similar theory. At present, domestic research on the kinematic characteristics of grinding media is mainly focused on the simulation of discrete element numerical simulation, and the use of laboratory-scale grinding machine for verification. However, in order to change the movement law of the mill medium, the most common method is to change the operating parameters of the mill and the shape of the section of the liner. The test cost is large, the number of tests is large, and the processing of the irregular section liner is particularly complicated. Therefore, there is a need for a simple and effective device to study the motion characteristics of grinding media.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a device and a method for changing the grinding trajectory of a grinding machine based on a magnetic field, which is simple and reliable in structure, strong in adaptability and good in simulation effect.
  • a device for changing the movement path of a grinding machine based on a magnetic field comprising a base (1), a coil housing (2), a magnet column (3), a coil (4), a mill barrel (5), a mill cylinder (5) It is installed inside the coil housing (2) and has the same central axis position and can rotate along its central axis.
  • the coil housing (2) is fixed on the base (1), and the magnet column (3) is evenly fixed by bolts.
  • the base (1) is fixed to the ground by anchor bolts, and the coil (4) is wound on the magnet column (3), and the magnet column (3) is arranged inside the coil housing cylinder at a certain angle. Pair of lines
  • the desired magnetic field can be obtained.
  • the required magnetic field direction can be obtained, and the magnitude of the magnetic field can be realized by changing the intensity of the current in the coil (4).
  • the central angle between two adjacent magnet columns (3) is 30 degrees.
  • the device connects the coils on the magnet column (3) separated by 30 degrees, 60 degrees, 90 degrees or 120 degrees.
  • the method of grinding the grinding motion trajectory simulation experiment is performed, and the coil (4) is energized to obtain the desired magnetic field, and by changing the different connection of the coil (4), the required magnetic field direction can be obtained.
  • the size of the magnetic field can be achieved by changing the intensity of the current in the coil (4), thereby changing the trajectory of the motion grinding in the barrel.
  • the central angle between two adjacent magnet columns (3) is 30 degrees.
  • the coils on the magnet column (3) separated by 30 degrees, 60 degrees, 90 degrees or 120 degrees are connected.
  • the present invention is based on the principle of electromagnetism and by changing the intensity of the current of the conductive coil to change the magnitude of the applied magnetic field, and by connecting the coils uniformly distributed inside the barrel of the mill, the direction of the applied magnetic field can be changed, thereby realizing the change.
  • the role of the mill's motion trajectory is based on the principle of electromagnetism and by changing the intensity of the current of the conductive coil to change the magnitude of the applied magnetic field, and by connecting the coils uniformly distributed inside the barrel of the mill, the direction of the applied magnetic field can be changed, thereby realizing the change.
  • the role of the mill's motion trajectory is based on the principle of electromagnetism and by changing the intensity of the current of the conductive coil to change the magnitude of the applied magnetic field, and by connecting the coils uniformly distributed inside the barrel of the mill, the direction of the applied magnetic field can be changed, thereby realizing the change.
  • the role of the mill's motion trajectory is based on the principle of electromagnetis
  • the invention can effectively simulate the movement law of the grinding medium of the mill, and has the following advantages compared with the prior art:
  • the structure is simple and reliable, adaptable and easy to install
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a connection method of the coil
  • Figure 3 is another connection method of the coil.
  • the ball mill impact collision simulation test bench of the present invention comprises a base 1, a coil housing 2, a magnet column 3, a coil 4, and a mill cylinder 5, and the mill cylinder 5 is installed inside the coil housing 2 and has the same central axis position. And rotating along the central axis thereof, the coil housing 2 is fixedly mounted on the base 1, and the magnet column 3 is evenly fixed in the coil housing 2 by bolts, and the central angle between the adjacent two magnet columns 3 is 30 degrees, and the base 1
  • the anchor 4 is fixed to the ground by an anchor bolt, and the coil 4 is wound around the magnet column 3.
  • the magnet column 3 Since the magnet column 3 is arranged inside the coil housing cylinder at a certain angle, the magnet column of 30 degrees (Fig. 2), 60 degrees (Fig. 3), 90 degrees or 120 degrees is separated by a common motor rotor coil connection method. The coils on 3 are connected, and then the coil 4 is energized to obtain the desired direction of the magnetic field, the magnitude of which can be achieved by varying the intensity of the current in the coil 4.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Algebra (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

一种基于磁场改变磨机磨介运动轨迹的装置和方法，该装置包括底座（1）、线圈壳体（2）、磁铁柱（3）、线圈（4）、磨机筒体（5），磨机筒体（5）安装在线圈壳体（2）内部且中心轴线位置相同，并可沿其中心轴线旋转，线圈壳体（2）安装固定在底座（1）上，磁铁柱（3）通过螺栓均匀固定在线圈壳体（2）内，底座（1）通过地脚螺栓固定在地面，磁铁柱（3）上缠绕线圈（4），磁铁柱（3）按照一定角度布置在线圈壳体（2）筒体内部，对线圈（4）通电，便可得到所要的磁场，通过改变线圈（4）的不同接法，可以获得所需要的磁场方向，磁场的大小可通过改变线圈（4）内电流的强度来实现，从而改变磨机筒体（5）内运动磨介的运动轨迹。

Description

一种基于磁场改变磨机磨介运动轨迹的装置和方法 技术领域
本发明涉及涉一种基于磁场改变磨机磨介运动轨迹的装置和方法，尤其适用于球磨机内磨矿介质运动规律的试验模拟和研究。
背景技术
磨矿介质运动特性的研究是解析和优化磨机性能的核心，直接影响着磨机产品粒度分布、功耗、磨损以及钢耗。随着球磨机滚筒直径的不断增大，无法有效的对内部复杂的运动过程以及冲击碰撞过程进行试验模拟，最为常见的方法为基于相似理论搭建实验室规模的小型磨机。目前，国内探究磨矿介质运动特性的研究主要集中在以离散元数值模拟主，并采用实验室规模的磨机进行验证的方法。然而，为了改变磨机介质运动规律，最为常见的方法是改变磨机操作参数和衬板截面形状，试验费用较大，试验次数较多，并且不规则截面衬板的加工尤为复杂。因此，亟需一种简易有效的装置研究磨矿介质运动特性。
发明内容
本发明的目的是克服已有技术中的不足之处，提供一种结构简单可靠、适应性强、模拟效果好的一种基于磁场改变磨机磨介运动轨迹的装置和方法。
一种基于磁场改变磨机磨介运动轨迹的装置，包括底座(1)、线圈壳体(2)、磁铁柱(3)、线圈(4)、磨机筒体(5)，磨机筒体(5)安装在线圈壳体(2)内部且中心轴线位置相同，并可沿其中心轴线旋转，线圈壳体(2)安装固定在底座(1)上，磁铁柱(3)通过螺栓均匀固定在线圈壳体(2)内，底座(1)通过地脚螺栓固定在地面，磁铁柱(3)上缠绕线圈(4)，磁铁柱(3)按照一定角度布置在线圈壳体筒体内部，对线 圈(4)通电，便可得到所要的磁场，通过改变线圈(4)的不同接法，可以获得所需要的磁场方向，磁场的大小可通过改变线圈(4)内电流的强度来实现。
所述的装置，相邻两个磁铁柱(3)间的圆心角为30度。
所述的装置，将相隔30度、60度、90度或120度的磁铁柱(3)上的线圈连接。
根据所述的装置进行磨机磨介运动轨迹模拟实验的方法，对线圈(4)通电，便可得到所要的磁场，通过改变线圈(4)的不同接法，可以获得所需要的磁场方向，磁场的大小可通过改变线圈(4)内电流的强度来实现，从而能改变磨机筒体内运动磨介的运动轨迹。
所述的方法，相邻两个磁铁柱(3)间的圆心角为30度。
所述的方法，将相隔30度、60度、90度或120度的磁铁柱(3)上的线圈连接。
有益效果：本发明基于电生磁的原理并通过改变导电线圈电流的强度以实现改变作用磁场的大小，通过连接均匀分布在磨机筒体内部的线圈，可改变作用磁场的方向，从而实现改变磨机运动轨迹的作用。
本发明能够有效的模拟磨机磨矿介质的运动规律，与现有技术相比具有如下优点：
1、结构简单可靠，适应性强，易于安装；
2、采用电生磁原理并结合线圈电流的强度，通过不同线圈接法实现作用磁场大小和方向的变化，可直接影响磨矿介质的运动规律。
附图说明
图1为本发明的结构示意图；
图2为线圈的一种连接方法；
图3为线圈的另一种连接方法。
图中：1－底座；2－线圈壳体；3－磁铁柱；4－线圈；5－磨机筒体；
具体实施方式
以下结合具体实施例，对本发明进行详细说明。
本发明的球磨机冲击碰撞模拟试验台，包括底座1、线圈壳体2、磁铁柱3、线圈4、磨机筒体5，磨机筒体5安装在线圈壳体2内部且中心轴线位置相同，并可沿其中心轴线旋转，线圈壳体2安装固定在底座1上，磁铁柱3通过螺栓均匀固定在线圈壳体2内，相邻两个磁铁柱3间的圆心角为30度，底座1通过地脚螺栓固定在地面，磁铁柱3上缠绕线圈4。
由于磁铁柱3按照一定角度布置在线圈壳体筒体内部，采用常用的电机转子线圈的接法，将相隔30度(图2)、60度(图3)、90度或120度的磁铁柱3上的线圈连接，随后对线圈4进行通电，便可得到所要的磁场方向，其该磁场方向的大小可通过改变线圈4内电流的强度来实现。
应当理解的是，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (6)

  1. 一种基于磁场改变磨机磨介运动轨迹的装置，其特征在于，包括底座(1)、线圈壳体(2)、磁铁柱(3)、线圈(4)、磨机筒体(5)，磨机筒体(5)安装在线圈壳体(2)内部且中心轴线位置相同，并可沿其中心轴线旋转，线圈壳体(2)安装固定在底座(1)上，磁铁柱(3)通过螺栓均匀固定在线圈壳体(2)内，底座(1)通过地脚螺栓固定在地面，磁铁柱(3)上缠绕线圈(4)，磁铁柱(3)按照一定角度布置在线圈壳体筒体内部，对线圈(4)通电，便可得到所要的磁场，通过改变线圈(4)的不同接法，可以获得所需要的磁场方向，磁场的大小可通过改变线圈(4)内电流的强度来实现，从而改变磨机筒体内运动磨介的运动轨迹。
  2. 根据权利要求1所述的装置，其特征在于，相邻两个磁铁柱(3)间的圆心角为30度。
  3. 根据权利要求1所述的装置，其特征在于，将相隔30度、60度、90度或120度的磁铁柱(3)上的线圈连接。
  4. 根据权利要求1所述的装置进行磨机磨介运动轨迹模拟实验的方法，其特征在于，对线圈(4)通电，便可得到所要的磁场，通过改变线圈(4)的不同接法，可以获得所需要的磁场方向，磁场的大小可通过改变线圈(4)内电流的强度来实现，从而改变磨机筒体内运动磨介的运动轨迹。
  5. 根据权利要求4所述的方法，其特征在于，相邻两个磁铁柱(3)间的圆心角为30度。
  6. 根据权利要求4所述的方法，其特征在于，将相隔30度、60度、90度或120度的磁铁柱(3)上的线圈连接。
PCT/CN2016/108881 2016-06-24 2016-12-07 一种基于磁场改变磨机磨介运动轨迹的装置和方法 Ceased WO2017219617A1 (zh)

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