WO2022012219A1 - 一种实现滚轴筛自适应水平等厚筛分的控制系统及方法 - Google Patents

一种实现滚轴筛自适应水平等厚筛分的控制系统及方法 Download PDF

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Publication number
WO2022012219A1
WO2022012219A1 PCT/CN2021/098834 CN2021098834W WO2022012219A1 WO 2022012219 A1 WO2022012219 A1 WO 2022012219A1 CN 2021098834 W CN2021098834 W CN 2021098834W WO 2022012219 A1 WO2022012219 A1 WO 2022012219A1
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Prior art keywords
screen
roller
horizontal
shaft
control system
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PCT/CN2021/098834
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English (en)
French (fr)
Inventor
刘初升
陈杲
武继达
王存款
李洪喜
何德艺
高祺
史冬志
郑剑锋
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中国矿业大学
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Publication of WO2022012219A1 publication Critical patent/WO2022012219A1/zh

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    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens

Definitions

  • the invention relates to the field of material screening and automatic control, in particular to a control system and method for realizing self-adaptive horizontal equal-thickness screening of roller screens.
  • the equal thickness screen has been widely used due to its advantages of large processing capacity, high efficiency and reliable performance.
  • the presentation form of the equal thickness screen is mainly a vibrating screen or a roller screen composed of multiple screen surfaces with different inclination angles or a banana-shaped screen surface.
  • the roller screen is widely used in coal handling systems and screening systems. Machinery also plays an important role in the green mining of coal.
  • the core problem of the equal-thickness roller screen is how to reduce the volume of the screen body, improve the screening efficiency, and reduce energy consumption.
  • the existing large-scale equal-thickness roller screen can realize equal-thickness screening by changing the screen surface of the roller screen into a banana-shaped multi-curved section arrangement.
  • One of the objectives of the present invention is to provide a control system for realizing self-adaptive horizontal equal-thickness screening of roller screens.
  • the second purpose of the present invention is to provide a method for realizing self-adaptive horizontal equal-thickness screening of roller screens based on the above-mentioned control system.
  • a control system for realizing self-adaptive horizontal equal-thickness screening of roller screen including roller screen, monitoring system and control system,
  • the roller screen includes a screen box body and a base.
  • the screen box body is fixed on the base.
  • the screen box body includes a screen box top plate, two oppositely arranged screen box side plates and a horizontal screen surface.
  • the horizontal screen The surface is composed of a plurality of sieve shafts arranged in parallel and at equal intervals, and the plurality of said sieve shafts are driven by their respective drive motors.
  • the gaps constitute the sieve holes
  • the monitoring system includes a material distribution monitoring sensor, a speed sensor, a material blanking monitoring device, and a data acquisition module.
  • the material distribution monitoring sensor is installed on the top plate of the screen box just above the horizontal screen surface and along the length direction of the top plate of the screen box.
  • There are a plurality of uniformly spaced sensors the speed sensors are installed on the screen shaft, and one is arranged on each screen shaft.
  • the blanking monitoring device is installed directly below the horizontal screen surface and along the length of the horizontal screen surface. A plurality of direction intervals are evenly arranged, and the material distribution monitoring sensor, the speed measuring sensor and the material blanking monitoring device are respectively electrically connected with the input end of the data acquisition module,
  • the control system includes a data processing module and a motor controller, the output end of the data acquisition module is electrically connected with the input end of the data processing module, the output end of the data processing module is electrically connected with the input end of the motor controller, and the motor controller outputs The terminals are electrically connected to each drive motor.
  • the speed sensor is installed at one end of the screen shaft away from the drive motor.
  • both ends of the sieve shaft are respectively fixed to the side plates of the sieve box on both sides, and one end of the sieve shaft extends out of the side plates of the sieve box and is connected to the drive motor for transmission.
  • the arrangement number of the material distribution monitoring sensors is determined by the screen box structure and control precision.
  • the arrangement number of the blanking monitoring devices is determined by the screen box structure and control precision.
  • the present invention also provides a control method for realizing self-adaptive horizontal equal-thickness screening of roller screens by utilizing the above system, comprising the following steps:
  • Step 1 Set the initial speed of each drive motor, start the drive motor, and the material falls from the feed end of the screen box body to the horizontal screen surface. Driven by the drive motor, the material flows above the screen shaft and passes through the screen; Through the reasonable setting of the speed distribution of the drive motor, the flow rate of the material on the screen surface gradually decreases from the feeding port to the discharging port, and is evenly distributed on the screen surface to achieve horizontal equal-thickness screening;
  • Step 2 Use the material distribution monitoring sensor to monitor the material distribution on the screen surface, use the speed sensor to monitor the rotational speed of each sieve shaft, use the blanking monitoring device to monitor the blanking distribution on the screen surface, and transmit the respective monitoring data through the data acquisition module. Analyze and process the data processing module;
  • Step 3 When the rotational speed of a certain screen shaft is detected abruptly, it is judged that the material jam occurs.
  • the data processing module controls the driving motor of the material jam screen shaft through the motor controller to temporarily reverse the position of the foreign object, and then resume the forward rotation to solve the problem of the material jam. Problem; when the distribution of materials on the screen surface and the distribution of falling materials under the screen surface are monitored, and the working conditions are judged to change, the data processing module adjusts the speed of the drive motor through the motor controller, so that the roller screen can achieve self-adaptive horizontal equal-thickness screening; In the process of regulation, priority is given to dealing with the problem of jamming, and self-adaptive equal-thickness speed regulation is carried out under the condition of ensuring normal operation.
  • the screen shafts on the roller screen are arranged horizontally to form a horizontal screen surface.
  • the screen pieces are installed on the screen shaft.
  • the gap between the screen pieces and the screen pieces and the screen shaft constitutes "sieve holes".
  • the top of the sieve shaft flows through the sieve while flowing.
  • the movement of the material on the screen surface is related to the speed of the screen shaft.
  • the specific speed distribution of the drive motor drives the screen shaft to rotate, so that the flow rate of the material on the screen surface gradually decreases from the feed port to the discharge port, and is evenly distributed on the screen surface. , so as to realize the horizontal equal-thickness screening of the roller screen and reduce the screen volume of the roller screen.
  • the material distribution monitoring sensor, speed sensor and material drop monitoring device are used to monitor the material distribution on the screen surface, the rotational speed of the screen shaft and the material drop distribution on the screen surface during the screening process of the roller screen, and the monitoring data is passed through the data acquisition module. It is transmitted to the data processing module for analysis and processing.
  • the present invention realizes the horizontal equal-thickness screening of the roller screen by adjusting the rotating speed of the screen shaft.
  • the volume of the screen body is reduced and the mechanical
  • the structure reduces the manufacturing cost, and through the monitoring system and the control system, the screening process of the roller screen is monitored and adaptively adjusted online, which solves the problem of the material jam of the roller screen, improves the screening efficiency, and reduces the energy consumption.
  • the degree of automation and intelligence is high, which ensures the safety of operators.
  • Fig. 1 is the control system structure schematic diagram of realizing self-adaptive horizontal equal-thickness screening roller screen according to the present invention
  • Fig. 2 is the structural representation of the horizontal screen surface of the roller screen in Fig. 1;
  • Fig. 3 is the control principle diagram of realizing self-adaptive horizontal equal thickness screening roller screen according to the present invention.
  • the present invention provides a control system for realizing self-adaptive horizontal equal-thickness screening of a roller screen, including a roller screen, a monitoring system and a control system.
  • the roller screen includes a screen box body 1 and a base 4, the screen box body 1 is fixed on the base 4, and the screen box body 1 includes a screen box top plate 102, two oppositely arranged screen box side plates 101 and a horizontal
  • the screen surface, the horizontal screen surface is composed of a plurality of screen shafts 2 arranged in parallel and at equal intervals, and each screen shaft 2 is driven by its own driving motor 3 respectively.
  • the two ends of the screen shaft 2 are respectively connected with the two screen shafts.
  • the side plate 101 of the sieve box on the side is fixed, and one end of the sieve shaft 2 protrudes from the side plate 101 of the sieve box and is connected with the drive motor 3 in a driving manner. As shown in Fig.
  • a screen 201 is installed on the screen shaft 2, and the gaps between the screen 201 and the screen 201 and between the screen 201 and the screen shaft 2 constitute the screen holes 202, and the material is on the horizontal screen surface.
  • the drive motor 3 outputs different rotational speeds to drive the screen shaft 2 to rotate, and through the specific rotational speed distribution, the flow rate of the material on the screen surface gradually decreases from the feed port to the discharge port, and is evenly distributed on the horizontal screen surface, thereby The horizontal equal-thickness screening of the roller screen is realized, and the screen volume of the equal-thickness roller screen is reduced.
  • the monitoring system includes a material distribution monitoring sensor 5, a speed sensor 6, a material blanking monitoring device 7, and a data acquisition module.
  • the material distribution monitoring sensor 5 is installed on the top plate 102 of the screen box just above the horizontal screen surface, and runs along the screen.
  • the top plate 102 of the box is evenly arranged at intervals in the length direction, and the specific number of arrangements is determined by the structure of the screen box and the control accuracy.
  • the speed measuring sensor 6 is installed on the screen shaft 2, and one is arranged on each screen shaft
  • the blanking monitoring device 7 is installed directly under the horizontal screen surface, and is evenly spaced along the length direction of the horizontal screen surface. The specific arrangement number is determined by the screen box structure and control accuracy.
  • the material distribution monitoring sensors 5, The speed measuring sensor 6 and the blanking monitoring device 7 are respectively electrically connected to the input end of the data acquisition module; the material distribution monitoring sensor 5 monitors the material distribution on the horizontal screen surface, the speed measuring sensor 6 monitors the rotational speed of each sieve shaft 2, and the blanking monitoring The device 7 monitors the distribution of falling material in the screening process of the roller screen, and realizes the online monitoring of the working process of the roller screen.
  • the control system includes a data processing module and a motor controller, the output end of the data acquisition module is electrically connected with the input end of the data processing module, the output end of the data processing module is electrically connected with the input end of the motor controller, and the motor controller outputs
  • the terminal is electrically connected with each drive motor 3; the data processing module receives the monitoring data from the data acquisition module, and adjusts the output rotational speed of the drive motor 3 by the motor controller adaptively, so as to realize the self-adaptive level and equal thickness of the roller screen. Sieve.
  • the control method for realizing self-adaptive horizontal equal-thickness screening of roller screen by using the above system, as shown in Figure 3, includes the following steps:
  • Step 1 Set the initial speed of each drive motor 3, start the drive motor 3, the material falls from the feed end of the screen box body 1 to the horizontal screen surface, and driven by the drive motor 3, the material is on the top side of the screen shaft 2. Flow through the screen; through the reasonable speed distribution setting of the drive motor 3, the flow rate of the material on the screen surface gradually decreases from the feed port to the discharge port, and is evenly distributed on the screen surface to achieve horizontal equal-thickness screening;
  • Step 2 Use the material distribution monitoring sensor 5 to monitor the material distribution on the screen surface, use the speed measuring sensor 6 to monitor the rotational speed of each screen shaft 2, use the blanking monitoring device 7 to monitor the blanking distribution on the screen surface, and pass the respective monitoring data through.
  • the data acquisition module is transmitted to the data processing module for analysis and processing;
  • Step 3 When the rotational speed of a certain sieve shaft 2 is monitored abruptly, it is judged that a material jam has occurred, and the data processing module controls the drive motor 3 of the sieve shaft 2 through the motor controller to reversely adjust the position of the foreign matter for a short time, and then resume forward rotation to Solve the problem of jamming; when the distribution of materials on the screen surface and the distribution of falling materials on the screen surface change, and the working conditions are judged to change, the data processing module adjusts the speed of the drive motor 3 through the motor controller, so that the roller screen can achieve an adaptive level, etc. Thick screening; in the control process, priority is given to dealing with the problem of jamming, and self-adaptive equal-thickness speed regulation is carried out under the condition of ensuring normal operation.

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  • Preliminary Treatment Of Fibers (AREA)

Abstract

一种实现滚轴筛自适应水平等厚筛分的控制系统，包括由筛箱（1）、筛轴（2）、驱动电机（3）、底座（4）组成的滚轴筛，物料分布监测传感器（5）、测速传感器（6）、落料监测装置（7）、数据采集模块组成的监测系统，以及数据处理模块、电机控制器组成的控制系统，所述筛轴（2）水平布置在滚轴筛上，所述驱动电机（3）输出特定的转速分别带动筛轴（2）转动，从而实现滚轴筛在水平筛面上的等厚筛分，减小筛体体积；所述监测系统对滚轴筛工作参数进行在线监测，通过控制系统进行分析处理并调节驱动电机（3）的转速，实现滚轴筛自适应水平等厚筛分，提高筛分效率，降低能源消耗。以及一种筛分控制方法。

Description

一种实现滚轴筛自适应水平等厚筛分的控制系统及方法 技术领域
本发明涉及物料筛分及自动化控制领域，具体涉及一种实现滚轴筛自适应水平等厚筛分的控制系统及方法。
背景技术
近年来，随着重介质选煤工艺的推广与大型化选煤厂的建设，等厚筛以其处理量大、效率较高、性能可靠等优点，越来越得到广泛的应用。等厚筛的呈现形式主要是以多段不同倾角的筛面或香蕉形筛面组成的振动筛或滚轴筛，其中，滚轴筛作为一种广泛用于输煤系统与筛分系统的筛分机械，在煤炭的绿色开采中也发挥着重要的作用。等厚滚轴筛的核心问题在于如何减小筛体体积、提高筛分效率、降低能源消耗。现有的大型等厚滚轴筛通过将滚轴筛筛面改成香蕉形多曲段排列以实现等厚筛分，筛体体积庞大，且在实际生产过程中，工况复杂，筛分的物料也存在着种类繁多、给料不均、湿度不均等一系列的情况，使滚轴筛工作状态不佳，容易出现卡料、堵塞等问题。
发明内容
本发明的目的之一是提供一种实现滚轴筛自适应水平等厚筛分的控制系统。
本发明的目的之二是提供一种基于上述控制系统实现滚轴筛自适应水平等厚筛分的方法。
为实现上述目的，本发明采用的技术方案如下：一种实现滚轴筛自适应水平等厚筛分的控制系统，包括滚轴筛、监测系统和控制系统，
所述滚轴筛包括筛箱本体和底座，所述筛箱本体固定在底座上，所述筛箱本体包括筛箱顶板、两个相对设置的筛箱侧板和水平筛面，所述水平筛面由多根筛轴平行等间距排列组成，多根所述筛轴分别由各自的驱动电机带动，所述筛轴上安装有筛片，筛片与筛片及筛片与筛轴之间的间隙构成筛孔，
所述监测系统包括物料分布监测传感器、测速传感器、落料监测装置、数据采集模块，所述物料分布监测传感器安装在水平筛面正上方的筛箱顶板上，且沿着筛箱顶板的长度方向间隔均匀布置有多个，所述测速传感器安装在筛轴上，且 每根筛轴上各布置一个，所述落料监测装置安装在水平筛面的正下方，且沿着水平筛面的长度方向间隔均匀布置有多个，所述物料分布监测传感器、测速传感器、落料监测装置分别与数据采集模块的输入端电连接，
所述控制系统包括数据处理模块和电机控制器，数据采集模块的输出端与数据处理模块的输入端电连接，数据处理模块的输出端与电机控制器输入端电连接，所述电机控制器输出端与各驱动电机电连接。
优选的，所述测速传感器安装在筛轴远离驱动电机的一端。
优选的，所述筛轴的两端分别与两侧的筛箱侧板固定，且所述筛轴的一端伸出筛箱侧板后与驱动电机传动连接。
优选的，所述物料分布监测传感器的布置数量由筛箱结构和控制精度决定。
优选的，所述落料监测装置的布置数量由筛箱结构和控制精度决定。
本发明还提供利用上述系统实现滚轴筛自适应水平等厚筛分的控制方法，包括以下步骤：
步骤一、设置各驱动电机的初始转速，启动驱动电机，物料从筛箱本体的进料端落入到水平筛面上，在驱动电机的带动下，物料在筛轴上方边流动边透筛；通过合理的驱动电机转速分布设置使筛面上物料流速从进料口到出料口逐渐减小，均匀分布在筛面上，实现水平等厚筛分；
步骤二、利用物料分布监测传感器监测筛面上物料分布情况，利用测速传感器监测各个筛轴的转速，利用落料监测装置监测筛面下落料分布情况，并将各自的监测数据通过数据采集模块传输给数据处理模块进行分析处理；
步骤三、当监测到某根筛轴的转速突降，判断发生卡料，数据处理模块通过电机控制器控制卡料筛轴的驱动电机短暂反转调整异物位置，然后恢复正转以解决卡料问题；当监测到筛面上物料分布与筛面下落料分布发生变化，判断工况发生变化，数据处理模块通过电机控制器调整驱动电机转速，使滚轴筛实现自适应水平等厚筛分；在调控过程中，优先处理卡料问题，在保证正常工作的条件下进行自适应等厚调速。
滚轴筛上的筛轴水平布置组成水平筛面，筛片安装在筛轴上，筛片与筛片及筛轴之间的间隙构成“筛孔”，驱动电机带动筛轴转动，使物料在筛轴上方边流动边透筛。筛面上物料的运动情况与筛轴转速有关，通过驱动电机输出特定的转 速分布带动筛轴转动，使筛面上物料流速从进料口到出料口逐渐减小，均匀分布在筛面上，从而实现滚轴筛的水平等厚筛分，减小滚轴筛的筛体体积。筛分过程中，利用物料分布监测传感器、测速传感器、落料监测装置监测滚轴筛筛分过程中筛面上物料分布、筛轴转速与筛面下落料分布，并将监测数据通过数据采集模块传输给数据处理模块进行分析处理。
当发生卡料时，筛轴转速突降，由此判断发生卡料，数据处理模块通过电机控制器控制卡料筛轴的驱动电机短暂反转调整异物位置，然后恢复正转以解决卡料问题；当处理量等工况发生变化时，筛面上物料分布与筛面下落料分布发生变化，数据处理模块由此通过电机控制器调整驱动电机转速，使滚轴筛实现理想的等厚筛分，从而提高筛分效率，降低能源消耗。在调控过程中，优先处理卡料问题，在保证正常工作的条件下进行自适应等厚调速。
与现有技术相比，本发明通过调整筛轴转速的方式，实现滚轴筛的水平等厚筛分，与传统香蕉形等厚滚轴筛相比，减小了筛体体积，简化了机械结构，降低了制造成本，并通过监测系统与控制系统对滚轴筛的筛分过程进行在线监测与自适应调节，解决滚轴筛的卡料问题，提高了筛分效率，降低了能源消耗，与现有技术相比，自动化与智能化程度高，保障操作人员安全。
附图说明
图1为本发明的实现自适应水平等厚筛分滚轴筛的控制系统结构示意图；
图2为图1中滚轴筛水平筛面的结构示意图；
图3为本发明的实现自适应水平等厚筛分滚轴筛的控制原理图；
图中：1-筛箱本体，101-筛箱侧板，102-筛箱顶板，2-筛轴，201-筛片，202-筛孔，3-驱动电机，4-底座，5-物料分布监测传感器，6-测速传感器，7-落料监测装置。
具体实施方式
下面结合附图和具体实施例对本发明作进一步详细说明。
如图1所示，本发明提供一种实现滚轴筛自适应水平等厚筛分的控制系统，包括滚轴筛、监测系统和控制系统。
所述滚轴筛包括筛箱本体1和底座4，所述筛箱本体1固定在底座4上，所述筛箱本体1包括筛箱顶板102、两个相对设置的筛箱侧板101和水平筛面，所 述水平筛面由多根筛轴2平行等间距排列组成，每根筛轴2分别由各自的驱动电机3带动，本实施例中，所述筛轴2的两端分别与两侧的筛箱侧板101固定，且所述筛轴2的一端伸出筛箱侧板101后与驱动电机3传动连接。如图2所示，所述筛轴2上安装有筛片201，筛片201与筛片201之间及筛片201与筛轴2之间的间隙构成筛孔202，物料在水平筛面上边流动边透筛；驱动电机3输出不同的转速带动筛轴2转动，通过特定的转速分布使筛面上物料流速从进料口到出料口逐渐减小，均匀分布在水平筛面上，从而实现滚轴筛的水平等厚筛分，减小等厚滚轴筛的筛体体积。
所述监测系统包括物料分布监测传感器5、测速传感器6、落料监测装置7、数据采集模块，所述物料分布监测传感器5安装在水平筛面正上方的筛箱顶板102上，且沿着筛箱顶板102的长度方向间隔均匀布置有多个，具体布置数量由筛箱结构和控制精度决定，所述测速传感器6安装在筛轴2上，且每根筛轴2上各布置一个，所述落料监测装置7安装在水平筛面的正下方，且沿着水平筛面的长度方向间隔均匀布置有多个，具体布置数量由筛箱结构和控制精度决定，所述物料分布监测传感器5、测速传感器6、落料监测装置7分别与数据采集模块的输入端电连接；所述物料分布监测传感器5监测水平筛面上的物料分布情况，测速传感器6监测各筛轴2转速，落料监测装置7监测滚轴筛筛分过程中的落料分布情况，实现滚轴筛工作过程的在线监测。
所述控制系统包括数据处理模块和电机控制器，数据采集模块的输出端与数据处理模块的输入端电连接，数据处理模块的输出端与电机控制器输入端电连接，所述电机控制器输出端与各驱动电机3电连接；所述数据处理模块接收来自数据采集模块的监测数据，通过电机控制器对驱动电机3的输出转速进行自适应调整，以实现滚轴筛的自适应水平等厚筛分。
利用上述系统实现滚轴筛自适应水平等厚筛分的控制方法，如图3所示，包括以下步骤：
步骤一、设置各驱动电机3的初始转速，启动驱动电机3，物料从筛箱本体1的进料端落入到水平筛面上，在驱动电机3的带动下，物料在筛轴2上方边流动边透筛；通过合理的驱动电机3转速分布设置使筛面上物料流速从进料口到出料口逐渐减小，均匀分布在筛面上，实现水平等厚筛分；
步骤二、利用物料分布监测传感器5监测筛面上物料分布情况，利用测速传感器6监测各个筛轴2的转速，利用落料监测装置7监测筛面下落料分布情况，并将各自的监测数据通过数据采集模块传输给数据处理模块进行分析处理；
步骤三、当监测到某根筛轴2的转速突降，判断发生卡料，数据处理模块通过电机控制器控制卡料筛轴2的驱动电机3短暂反转调整异物位置，然后恢复正转以解决卡料问题；当监测到筛面上物料分布与筛面下落料分布发生变化，判断工况发生变化，数据处理模块通过电机控制器调整驱动电机3转速，使滚轴筛实现自适应水平等厚筛分；在调控过程中，优先处理卡料问题，在保证正常工作的条件下进行自适应等厚调速。

Claims (6)

  1. 一种实现滚轴筛自适应水平等厚筛分的控制系统，其特征在于：包括滚轴筛、监测系统和控制系统，
    所述滚轴筛包括筛箱本体(1)和底座(4)，所述筛箱本体(1)固定在底座(4)上，所述筛箱本体(1)包括筛箱顶板(102)、两个相对设置的筛箱侧板(101)和水平筛面，所述水平筛面由多根筛轴(2)平行等间距排列组成，多根所述筛轴(2)分别由各自的驱动电机(3)带动，所述筛轴(2)上安装有筛片(201)，筛片(201)与筛片(201)之间及筛片(201)与筛轴(2)之间的间隙构成筛孔(202)，
    所述监测系统包括物料分布监测传感器(5)、测速传感器(6)、落料监测装置(7)、数据采集模块，所述物料分布监测传感器(5)安装在水平筛面正上方的筛箱顶板(102)上，且沿着筛箱顶板(102)的长度方向间隔均匀布置有多个，所述测速传感器(6)安装在筛轴(2)上，且每根筛轴(2)上各布置一个，所述落料监测装置(7)安装在水平筛面的正下方，且沿着水平筛面的长度方向间隔均匀布置有多个，所述物料分布监测传感器(5)、测速传感器(6)、落料监测装置(7)分别与数据采集模块的输入端电连接，
    所述控制系统包括数据处理模块和电机控制器，数据采集模块的输出端与数据处理模块的输入端电连接，数据处理模块的输出端与电机控制器输入端电连接，所述电机控制器输出端与各驱动电机(3)电连接。
  2. 根据权利要求1所述的一种实现滚轴筛自适应水平等厚筛分的控制系统，其特征在于：所述测速传感器(6)安装在筛轴(2)远离驱动电机(3)的一端。
  3. 根据权利要求1所述的一种实现滚轴筛自适应水平等厚筛分的控制系统，其特征在于：所述筛轴(2)的两端分别与两侧的筛箱侧板(101)固定，且所述筛轴(2)的一端伸出筛箱侧板(101)后与驱动电机(3)传动连接。
  4. 根据权利要求1所述的一种实现滚轴筛自适应水平等厚筛分的控制系统，其特征在于：所述物料分布监测传感器(5)的布置数量由筛箱结构和控制精度决定。
  5. 根据权利要求1所述的一种实现滚轴筛自适应水平等厚筛分的控制系统，其特征在于：所述落料监测装置(7)的布置数量由筛箱结构和控制精度决定。
  6. 一种利用权利要求1至5任一项所述的系统实现滚轴筛自适应水平等厚 筛分的控制方法，其特征在于：包括以下步骤：
    步骤一、设置各驱动电机(3)的初始转速，启动驱动电机(3)，物料从筛箱本体(1)的进料端落入到水平筛面上，在驱动电机(3)的带动下，物料在筛轴(2)上方边流动边透筛；通过合理的驱动电机(3)转速分布设置使筛面上物料流速从进料口到出料口逐渐减小，均匀分布在筛面上，实现水平等厚筛分；
    步骤二、利用物料分布监测传感器(5)监测筛面上物料分布情况，利用测速传感器(6)监测各个筛轴(2)的转速，利用落料监测装置(7)监测筛面下落料分布情况，并将各自的监测数据通过数据采集模块传输给数据处理模块进行分析处理；
    步骤三、当监测到某根筛轴(2)的转速突降，判断发生卡料，数据处理模块通过电机控制器控制卡料筛轴(2)的驱动电机(3)短暂反转调整异物位置，然后恢复正转以解决卡料问题；当监测到筛面上物料分布与筛面下落料分布发生变化，判断工况发生变化，数据处理模块通过电机控制器调整驱动电机(3)转速，使滚轴筛实现自适应水平等厚筛分；在调控过程中，优先处理卡料问题，在保证正常工作的条件下进行自适应等厚调速。
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