技术领域technical field
一种电磁式多仓管磨机胀肚检测装置及预胀肚调控方法，涉及管磨机检测装置及技术领域。An electromagnetic multi-chamber tube mill expansion belly detection device and a pre-expansion belly control method relate to the tube mill detection device and the technical field.
背景技术Background technique
管磨机是近代工业上很重要的细磨设备，广泛用于建材、冶金、选矿、电力及化工行业粉磨生产领域。大型管磨机一般有多个仓室，其生产能力很高，当用隔仓板将磨机筒体分为二、三或四个不同长度的仓室时，称为多仓管磨机。多仓管磨机和短筒管磨机不同的地方仅在于它的长度比直径大2-7倍，物料在管磨机中经历的时间较长，产品细度均匀，粉碎比较大。在多仓管磨机中，隔仓板将磨机筒体分隔成若干仓室，在每一个仓内，根据物料细磨情况配合研磨体，这样就使物料的细磨逐仓分阶段进行，因而获得较高的研磨效率。Tube mill is a very important fine grinding equipment in modern industry, widely used in the fields of grinding production in building materials, metallurgy, mineral processing, electric power and chemical industry. Large tube mills generally have multiple chambers, and their production capacity is very high. When the barrel of the mill is divided into two, three or four chambers of different lengths with partition plates, it is called a multi-chamber tube mill. The difference between the multi-chamber tube mill and the short tube mill is that its length is 2-7 times larger than the diameter, and the time for the material to pass through the tube mill is longer, the product fineness is uniform, and the crushing is relatively large. In the multi-compartment tube mill, the partition plate divides the mill cylinder into several compartments. In each compartment, the grinding body is matched according to the fine grinding of the material, so that the fine grinding of the material is carried out in stages one by one. Thus a higher grinding efficiency is obtained.
在管磨机生产过程中，最重要故障就是胀肚现象，管磨机胀肚，指的是由于某种原因（如返砂量大、原矿量变大等）使给入管磨机的物料量变大，超过了管磨机本身允许的最大通过能力而排不出来，使管磨机排出的量少于进入管磨机的物料量，矿料在管磨机内逐渐积累，使管磨机失去磨矿作用，这种现象称为管磨机的胀肚。管磨机胀肚的危害非常大，胀肚不仅使管磨机失去（或降低）对矿石的磨碎作用，破坏了磨矿的稳定工作，而且处理胀肚也将给后续作业造成给矿浓度和细度的波动，影响了后续作业的正常进行；另外，严重胀肚会导致管磨机、给矿器、返砂箱、轴承、齿轮等受冲击载荷而损坏。管磨机胀肚后，一般采取停止矿料供给、增加给矿水的方式进行处理，当胀肚现象比较严重时，还要采用高压水、人工卸磨等更加复杂的方式。胀肚现象严重影响了管磨机的生产效率。而如果设计一种胀肚检测装置，实现管磨机在胀肚前的检测，并依据检测数据实现管磨机工作的实时调整，使管磨机实时工作在胀肚前期的预胀肚状态，则可以有效避免管磨机胀肚故障的产生，保证管磨机正常运行，实现管磨机工作效率的最大化，实现企业节能降耗目的。In the production process of the tube mill, the most important fault is the bulging phenomenon. The bulging of the tube mill refers to the increase in the amount of material fed into the tube mill for some reason (such as a large amount of sand returned, an increase in the amount of raw ore, etc.) , exceeding the maximum passing capacity allowed by the tube mill itself and cannot be discharged, so that the amount discharged from the tube mill is less than the amount of material entering the tube mill, and the mineral materials gradually accumulate in the tube mill, causing the tube mill to lose its grinding capacity Mineral effect, this phenomenon is called the belly of the tube mill. The bulge of the tube mill is very harmful. The bulge not only causes the tube mill to lose (or reduce) the grinding effect on the ore, but also destroys the stable work of the grinding, and the treatment of the bulge will also cause the concentration of the ore to follow-up operations. And the fluctuation of fineness affects the normal operation of follow-up operations; in addition, severe belly swelling will cause damage to tube mills, mine feeders, sand return boxes, bearings, gears, etc. due to impact loads. After the tube mill is inflated, it is generally treated by stopping the supply of mineral materials and increasing the supply of mineral water. When the phenomenon of inflating is serious, more complicated methods such as high-pressure water and manual unloading of the mill are used. The bulging phenomenon seriously affects the production efficiency of the tube mill. However, if a belly-blowing detection device is designed to realize the detection of the tube mill before the belly-blowing, and realize the real-time adjustment of the work of the tube mill according to the detection data, so that the tube mill can work in real-time in the pre-blooming state of the early stage of belly-blowing, It can effectively avoid the occurrence of tube mill bulging failure, ensure the normal operation of the tube mill, maximize the working efficiency of the tube mill, and realize the purpose of energy saving and consumption reduction of the enterprise.
发明内容Contents of the invention
本发明要解决的技术问题是：克服现有技术的不足，提供一种能检测管磨机胀肚状态，并能对管磨机工作进行实时调整，使管磨机工作在胀肚前期的预胀肚状态的多仓管磨机胀肚检测装置及预胀肚调控方法。The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a predictive device that can detect the bulging state of the tube mill and adjust the work of the tube mill in real time so that the tube mill works in the early stage of bloating. A multi-chamber tube mill bulge detection device in a bloated state and a method for pre-bloating bulge control.
本发明解决其技术问题所采用的技术方案是：该电磁式多仓管磨机胀肚检测装置，包括开设在管磨机机壳上的检测口，检测口为向外突出的圆柱孔，管磨机的每个仓室均对应设有一个检测口，管磨机通过支架支撑安装并通过变频电机驱动转动，管磨机同时配备有风机和矿料输送皮带，风机和矿料输送皮带均通过控制系统进行控制，其特征在于：所述的检测口上部通过管磨机顶盖密封，检测口内安装检测装置，所述的检测装置包括一U形磁铁、导磁板和检测头，U形磁铁的开口端朝向管磨机机壳内部，导磁板设置在U形磁铁的开口下侧，导磁板下端与检测头固定连接，检测头下端伸出检测口，U形磁铁的一个竖直部上缠绕有一组连接电源的磁力线圈，另一个竖直部上缠绕有连接检测电路的感应线圈，检测电路连接外部的信号处理模块，信号处理模块连接控制系统。由于U形磁铁的开口端磁阻非常大，会导致磁力线圈产生的磁力线无法到达感应线圈，所以没有物料及钢球群时，检测电路检测不到感应线圈的电流，也就不产生信号，当有物料及钢球群时，检测头会推动导磁板插入U形磁铁的开口端，导磁板的磁阻相对空气小得多，此时致磁力线圈产生的磁力线就可以到达感应线圈，感应线圈也就可以产生电流，检测电路检测到感应线圈内的电流从而产生信号，电信号通过检测电路传送至信号处理模块并转化为数字信号，数字信号输送至控制系统，控制系统根据数字信号的不同对变频电机和风机发出不同的指令。The technical solution adopted by the present invention to solve the technical problem is: the electromagnetic multi-chamber tube mill expansion belly detection device includes a detection port opened on the casing of the tube mill, the detection port is a cylindrical hole protruding outward, and the tube Each chamber of the mill is equipped with a detection port. The tube mill is supported by a bracket and driven by a frequency conversion motor. The tube mill is equipped with a fan and a mineral conveying belt, both of which pass through The control system is controlled, and it is characterized in that: the upper part of the detection port is sealed by the top cover of the tube mill, and a detection device is installed in the detection port. The detection device includes a U-shaped magnet, a magnetic guide plate and a detection head, and the U-shaped magnet The open end of the tube mill faces the inside of the tube mill casing, the magnetic guide plate is set on the lower side of the opening of the U-shaped magnet, the lower end of the magnetic guide plate is fixedly connected with the detection head, and the lower end of the detection head protrudes from the detection port. A set of magnetic coils connected to the power supply is wound on the upper part, and an induction coil connected to the detection circuit is wound on the other vertical part. The detection circuit is connected to an external signal processing module, and the signal processing module is connected to the control system. Because the reluctance of the open end of the U-shaped magnet is very large, the magnetic field lines generated by the magnetic force coil cannot reach the induction coil, so when there is no material and steel ball group, the detection circuit cannot detect the current of the induction coil, and no signal is generated. When there are materials and steel ball groups, the detection head will push the magnetic plate to insert into the opening end of the U-shaped magnet. The magnetic resistance of the magnetic plate is much smaller than that of the air. At this time, the magnetic force lines generated by the magnetic force coil can reach the induction coil, and the induction coil The coil can also generate current. The detection circuit detects the current in the induction coil to generate a signal. The electrical signal is transmitted to the signal processing module through the detection circuit and converted into a digital signal. The digital signal is transmitted to the control system. The control system depends on the digital signal. Different commands are issued to variable frequency motors and fans.
优选的，所述的检测头下部为圆柱体，检测头上部为圆锥体，圆锥体顶部连接有金属薄片，金属薄片的圆周与检测口内壁固定连接，导磁板下端通过一个圆形连接柱连接金属薄片的中部，所述仓室内的物料挤压检测头，检测头推动导磁板伸入U形磁铁的开口内，改变U形磁铁开口端的磁阻。检测头收到物料及钢球群的压力时会发生位移，金属薄片既能够将位移传递给导磁板，又能够使检测头在没有物料及钢球群时复位。Preferably, the lower part of the detection head is a cylinder, the upper part of the detection head is a cone, the top of the cone is connected with a metal sheet, the circumference of the metal sheet is fixedly connected with the inner wall of the detection port, and the lower end of the magnetic guide plate is connected by a circular connecting column In the middle of the metal sheet, the material in the warehouse squeezes the detection head, and the detection head pushes the magnetic guide plate into the opening of the U-shaped magnet to change the reluctance at the opening end of the U-shaped magnet. The detection head will be displaced when it receives the pressure of the material and the steel ball group, and the metal sheet can not only transmit the displacement to the magnetic plate, but also enable the detection head to reset when there is no material and steel ball group.
优选的，所述的检测口设有非金属材质的密封保护罩，U形磁铁的开口端密封穿过密封保护罩。密封保护罩可以防止物料进入检测口中，并且具有耐磨、防冲击的特性，保护检测口内部结构不受冲击，采用非金属材质可以保证U形磁铁的开口端能准确感应到钢球。Preferably, the detection port is provided with a non-metallic sealing protection cover, and the opening end of the U-shaped magnet is sealed through the sealing protection cover. The sealed protective cover can prevent materials from entering the detection port, and has the characteristics of wear resistance and impact resistance, and protects the internal structure of the detection port from impact. The use of non-metallic materials can ensure that the open end of the U-shaped magnet can accurately sense the steel ball.
所述的U形磁铁由多片硅钢片叠加组合而成。硅钢片具有良好的导磁性能，它可以大大提高U形磁铁的自感系数。The U-shaped magnet is formed by stacking and combining multiple silicon steel sheets. Silicon steel sheet has good magnetic permeability, which can greatly improve the self-inductance coefficient of U-shaped magnet.
优选的，所述的U形磁铁上端通过顶板进行定位固定，U形磁铁开口端的两个端部向中间弯曲，且两个端部呈尖锐锐角状密封穿过密封保护罩。该设计方式既可以保证U形磁铁准确感应到导磁板，从而改变其磁场，也可以保护U形磁铁，防止被过度冲击磨损，同时防止物料进入检测口中。Preferably, the upper end of the U-shaped magnet is positioned and fixed by the top plate, and the two ends of the open end of the U-shaped magnet are bent toward the middle, and the two ends are sealed in a sharp angle and pass through the sealing protective cover. This design method can not only ensure that the U-shaped magnet accurately senses the magnetically conductive plate, thereby changing its magnetic field, but also protects the U-shaped magnet from being excessively impacted and worn, and at the same time prevents materials from entering the detection port.
所述的密封保护罩采用聚氨酯树脂制作而成。聚氨酯树脂是一种具有高强度、抗撕裂、耐磨等特性的高分子材料，且无磁性，能更好的起到保护和密封的作用。The sealing protective cover is made of polyurethane resin. Polyurethane resin is a polymer material with high strength, tear resistance, wear resistance and other characteristics, and it is non-magnetic, which can better protect and seal.
所述的检测电路通过无线方式连接信号处理模块，信号处理模块连接一无线发射装置，无线发射装置将检测电路检测的信号通过无线的方式发射给控制系统。无线方式安装方便，无需复杂的连接，简化整套装置安装程序，并且不妨碍管磨机转动，是保证管磨机顺利运转并传输信号的关键装置。The detection circuit is connected to the signal processing module in a wireless manner, and the signal processing module is connected to a wireless transmitting device, and the wireless transmitting device transmits the signal detected by the detection circuit to the control system in a wireless manner. The wireless mode is easy to install, does not require complex connections, simplifies the installation procedure of the entire device, and does not hinder the rotation of the tube mill. It is the key device to ensure the smooth operation of the tube mill and transmit signals.
一种利用电磁式多仓管磨机胀肚检测装置进行预胀肚调控方法，包括如下步骤：A method for pre-expansion control using an electromagnetic multi-chamber tube mill expansion detection device, comprising the following steps:
第一步、设备安装：安装管磨机至工作位置并固定调试设备，在管磨机的检测口内安装检测装置；The first step, equipment installation: install the tube mill to the working position and fix the debugging equipment, install the detection device in the detection port of the tube mill;
第二步、模拟管磨机工作并标定管磨机胀肚状态，得出管磨机胀肚状态下检测头处在物料及钢球群中的时间T0：通过管磨机检测口向管磨机内部加入少量球石，启动变频电机带动管磨机以正常工作速度转动，启动矿料输送皮带以正常工作速度向管磨机内部输送物料及钢球群，使管磨机正常工作，同时，操作员人工监测管磨机内部状况，若运行正常则提高矿料输送皮带速度，提高矿料添加速度，继续监测，直至管磨机其中任一仓室进入胀肚状态，记录各个仓室中的检测头处在物料及钢球群中的时间T0，则T0为在该型号管磨机在研磨该物料及钢球群时，发生胀肚状态时检测头处在物料及钢球群中的时间；The second step is to simulate the work of the tube mill and calibrate the expansion state of the tube mill to obtain the time T0 when the detection head is in the material and steel ball group under the expansion state of the tube mill: through the detection port of the tube mill to the tube mill Add a small amount of ball stones inside the machine, start the frequency conversion motor to drive the tube mill to rotate at normal working speed, start the mineral material conveying belt to transport materials and steel balls to the inside of the tube mill at normal working speed, so that the tube mill can work normally, at the same time, The operator manually monitors the internal conditions of the tube mill. If the operation is normal, increase the speed of the mineral material conveying belt, increase the rate of mineral material addition, and continue monitoring until any compartment of the tube mill enters the state of expansion, and record the material in each compartment. The time T0 when the detection head is in the material and steel ball group, then T0 is the time when the tube mill of this type is grinding the material and steel ball group, when the belly is inflated, the detection head is in the material and steel ball group. ;
第三步、正常工作，并对管磨机旋转一周输出的信号和时间进行实时采集，记录各个仓室中的检测头分别处在物料及钢球群中的时间T；The third step is to work normally, and collect the signal and time output by the tube mill in one revolution in real time, and record the time T when the detection heads in each warehouse are in the material and steel ball group respectively;
第四步、根据时间T数据调控管磨机在预胀肚状态运转：控制系统接受信号处理模块反馈的数字信号，并判断数字信号时间T，根据时间T的数值大小，发出相应指令控制矿料输送皮带以及风机工作，使管磨机保持预胀肚状态运转。The fourth step is to control the tube mill to run in the pre-expansion state according to the time T data: the control system receives the digital signal fed back by the signal processing module, and judges the digital signal time T, and sends corresponding instructions to control the mineral material according to the value of the time T The conveyor belt and fan work to keep the tube mill running in a pre-expanded state.
操作员人工监测管磨机内部任一仓室进入胀肚状态的方法包括主要包括以下几个方面：The method for the operator to manually monitor any chamber inside the tube mill to enter the bulging state mainly includes the following aspects:
1）、管磨机主电机电流表指示电流在不断下降；1) The ammeter of the main motor of the tube mill indicates that the current is continuously decreasing;
2）、管磨机运转声音沉闷，噪音变小，几乎听不见钢球的冲击与泻落的声音；2) The running sound of the tube mill is dull, the noise becomes smaller, and the impact and falling sound of the steel ball can hardly be heard;
3）、管磨机给矿端有矿浆向外溢出；3) There is ore slurry overflowing from the feeding end of the tube mill;
4）、出口矿料开始变粗，返砂量在逐渐加大，溢流浓度增加、粒度变粗；4) The export mineral material begins to become thicker, the amount of sand returning is gradually increasing, the overflow concentration increases, and the particle size becomes coarser;
5）、浮选泡沫有明显变化，浮选药剂作用失调，矿化现象减弱等。5) The flotation foam has obvious changes, the flotation reagents are out of balance, and the mineralization phenomenon is weakened.
所述的根据时间T数据调控管磨机在预胀肚状态运转的方法为：The method for controlling the operation of the tube mill in the pre-expansion state according to the time T data is:
1）、当管磨机中所有仓室的时间T数值小于该仓室的T0*80%时，管磨机低于预胀肚状态运行，控制系统发出指令，逐步加大风机和矿料输送皮带的运行速度，逐步加大第一仓室的矿料输入；1) When the time T value of all chambers in the tube mill is less than T0*80% of the chamber, the tube mill operates below the pre-expansion state, and the control system issues instructions to gradually increase the fan and mineral material conveying The running speed of the belt gradually increases the mineral material input in the first warehouse;
2）、当管磨机中任一仓室的时间T数值等于该仓室的T0*80%时，管磨机保持预胀肚状态运行，控制系统发出指令，使风机转速保持稳定，矿料运输皮带的速度保持稳定；2) When the time T value of any chamber in the tube mill is equal to T0*80% of the chamber, the tube mill will keep running in the pre-expansion state, and the control system will issue instructions to keep the fan speed stable and the mineral material The speed of the conveyor belt remains stable;
3）、当管磨机中任一仓室的时间T数值大于该仓室的T0*80%时，管磨机突破预胀肚状态控制系统发出指令，减少矿料运输皮带的速度，逐步减少仓室的矿料输入量，并保持风机转速不变；3) When the time T value of any chamber in the tube mill is greater than T0*80% of the chamber, the tube mill breaks through the pre-expansion state control system and issues instructions to reduce the speed of the mineral material transport belt and gradually reduce The input amount of mineral materials in the warehouse, and keep the fan speed constant;
4）、当管磨机中任一仓室的时间T数值大于该仓室的T0*90%时，管磨机即将进入胀肚状态，控制系统控制风机以最大速度转动，同时停止矿料运输皮带的运行，停止第一仓室的矿料输入，直至时间T数值等于T0*80%，使管磨机在预胀肚状态运行。4) When the time T value of any chamber in the tube mill is greater than T0*90% of the chamber, the tube mill is about to enter the bulging state, the control system controls the fan to rotate at the maximum speed, and stops the transportation of mineral materials at the same time The operation of the belt stops the input of mineral materials in the first warehouse until the value of time T is equal to T0*80%, so that the tube mill operates in the pre-expansion state.
所述的记录检测头处在物料及钢球群中的时间T的具体方法为：当没有物料及钢球群施加压力到检测头下端时，检测头不产生位移，导磁板位于U形磁铁的开口端下方，U形磁铁开口处的磁阻大导致感应线圈内没有电流产生，检测电路无信号产生；当有物料及钢球群施加压力到检测头下端时，检测头推动导磁板产生位移，导磁板插入U形磁铁的开口端内，U形磁铁开口处的磁阻降低使感应线圈内产生电流，检测电路检测到电流并产生信号，检测电路将电信号传递给信号处理模块并转化成数字信号输出，同时记录有数字信号产生的时间为T，则T为检测头处在物料中的时间。The specific method for recording the time T when the detection head is in the material and steel ball group is: when there is no material and steel ball group to apply pressure to the lower end of the detection head, the detection head does not move, and the magnetic guide plate is located on the U-shaped magnet. Below the opening end of the U-shaped magnet, the large magnetic resistance at the opening of the U-shaped magnet causes no current to be generated in the induction coil, and no signal is generated in the detection circuit; Displacement, the magnetic guide plate is inserted into the opening end of the U-shaped magnet, and the reluctance at the opening of the U-shaped magnet decreases to generate a current in the induction coil. The detection circuit detects the current and generates a signal. The detection circuit transmits the electrical signal to the signal processing module and It is converted into a digital signal output, and the time when the digital signal is generated is recorded as T, then T is the time when the detection head is in the material.
与现有技术相比，该电磁式多仓管磨机胀肚检测装置及预胀肚调控方法的上述技术方案所具有的有益效果是：Compared with the prior art, the beneficial effects of the above-mentioned technical proposals of the electromagnetic multi-chamber tube mill expansion belly detection device and the pre-expansion belly control method are as follows:
1、该发明能检测管磨机胀肚状态，并能对管磨机工作进行实时调整，使管磨机工作在胀肚前期的预胀肚状态：在管磨机的检测口内安装检测装置，检测装置能够实现对管磨机内部物料及钢球群的检测，检测到的信号通过检测电路传输至信号处理模块，信号处理模块将信号转换并传输至控制系统，控制系统根据信号的不同对变频电机或者风机发出不同的指令，从而使管磨机持续保持在预胀肚状态运行，防止管磨机出现胀肚现象。1. The invention can detect the expansion state of the tube mill, and can adjust the work of the tube mill in real time, so that the tube mill can work in the pre-expansion state of the early expansion: install the detection device in the detection port of the tube mill, The detection device can realize the detection of the internal material and steel ball group of the tube mill. The detected signal is transmitted to the signal processing module through the detection circuit. The signal processing module converts the signal and transmits it to the control system. The control system controls the frequency conversion according to the signal The motor or fan sends out different instructions, so that the tube mill can continue to run in the pre-expansion state to prevent the tube mill from bulging.
2、检测装置包括一U形磁铁，U形磁铁外圈缠绕有两组线圈，管磨机工作时，利用导磁板改变U形磁铁开口端的磁阻，从而产生电信号并传递至信号处理模块进行输出。经过发明人反复多次试验发现，这样的设计能够精确感应出物料及钢球群是否存在检测头处，并发出相应信号，为下一步的管磨机工作实时调整提供基础。该电磁式多仓管磨机胀肚检测装置及预胀肚调控方法是首次将电磁传感技术应用于管磨机内部检测，填补了该领域的技术空白，对于管磨机在线检测领域具有十分重要的意义。2. The detection device includes a U-shaped magnet, and two sets of coils are wound around the outer ring of the U-shaped magnet. When the tube mill is working, the magnetic guide plate is used to change the reluctance at the opening end of the U-shaped magnet, thereby generating an electrical signal and transmitting it to the signal processing module to output. After repeated tests by the inventor, it was found that such a design can accurately sense whether the material and the steel ball group exist at the detection head, and send a corresponding signal, which provides a basis for the next step of real-time adjustment of the tube mill work. The electromagnetic multi-chamber tube mill expansion belly detection device and the pre-expansion belly control method are the first application of electromagnetic sensing technology to the internal detection of tube mills, which fills the technical gap in this field and has great significance for the online detection of tube mills. Significance.
3、可以使球磨机持续在预胀肚状态运行，可以有效避免管磨机胀肚故障的产生，保证管磨机正常运行，保证了后续作业的正常进行；防止管磨机、给矿器、返砂箱、轴承、齿轮等设备受冲击载荷而损坏，有效保护设备安全；而且可以使管磨机工作效率的最大化，实现企业节能降耗目的。3. It can make the ball mill continue to run in the pre-expansion state, which can effectively avoid the occurrence of tube mill expansion failure, ensure the normal operation of the tube mill, and ensure the normal progress of subsequent operations; prevent the tube mill, feeder, and return Sandboxes, bearings, gears and other equipment are damaged by impact loads, which can effectively protect equipment safety; and can maximize the working efficiency of tube mills and achieve the purpose of energy saving and consumption reduction for enterprises.
4、结构合理，提高使用寿命和检测精度：孔与管磨机机壳内部连通的一端安装非金属材质的密封保护罩，密封保护罩采用聚氨酯树脂制作而成，可以保证U形磁铁的开口端能准确感应到导磁板，并且密封保护罩具有耐磨、防冲击的特性，可以防止物料进入检测口中，保护检测口内部结构不受冲击。4. The structure is reasonable, which improves the service life and detection accuracy: a non-metallic sealing protective cover is installed at the end where the hole communicates with the inside of the tube mill casing. The sealing protective cover is made of polyurethane resin, which can ensure the opening of the U-shaped magnet. It can accurately sense the magnetic guide plate, and the sealed protective cover has the characteristics of wear resistance and impact resistance, which can prevent materials from entering the detection port and protect the internal structure of the detection port from impact.
附图说明Description of drawings
图1为该电磁式多仓管磨机胀肚检测装置的主剖视图。Fig. 1 is a main sectional view of the electromagnetic multi-chamber tube mill bulging detection device.
图2为该电磁式多仓管磨机胀肚检测装置的侧视图。Fig. 2 is a side view of the electromagnetic multi-chamber tube mill bulging detection device.
图3为图1的A处局部放大示意图。FIG. 3 is a partially enlarged schematic diagram of A in FIG. 1 .
其中：1、管磨机机壳2、管磨机顶盖3、支架4、检测口5、物料及钢球群6、U形磁铁7、电源8、顶板9、检测电路10、磁力线圈11、感应线圈12、导磁板13、金属薄片14、检测头15、密封保护罩。Among them: 1. Tube mill casing 2, tube mill top cover 3, bracket 4, detection port 5, material and steel ball group 6, U-shaped magnet 7, power supply 8, top plate 9, detection circuit 10, magnetic coil 11 , induction coil 12, magnetically conductive plate 13, metal sheet 14, detection head 15, sealing protective cover.
具体实施方式detailed description
图1~3是本发明的最佳实施例，下面结合附图1~3对本发明做进一步说明。Fig. 1～3 is preferred embodiment of the present invention, below in conjunction with accompanying drawing 1～3 the present invention is described further.
参照附图1-2：一种电磁式多仓管磨机胀肚检测装置，包括开设在管磨机机壳1上的检测口4，检测口4为向外突出的圆柱孔，管磨机的每个仓室均对应设有一个检测口4，管磨机通过支架3支撑安装并通过变频电机驱动转动，管磨机同时配备有风机和矿料输送皮带，风机和矿料输送皮带均通过控制系统进行控制。Referring to the accompanying drawings 1-2: an electromagnetic multi-chamber tube mill expansion belly detection device, including a detection port 4 opened on the tube mill casing 1, the detection port 4 is a cylindrical hole protruding outward, and the tube mill Each of the chambers is correspondingly equipped with a detection port 4. The tube mill is supported and installed by a bracket 3 and driven to rotate by a frequency conversion motor. The tube mill is equipped with a fan and a mineral conveying belt, both of which pass control system.
参照图3，检测口4上部通过管磨机顶盖2密封，管磨机机壳1的壳壁上开有与检测口4相通的孔。检测口4内安装检测装置，检测装置包括一U形磁铁6、导磁板12和检测头14，U形磁铁6的开口端朝向管磨机机壳1内部，导磁板12设置在U形磁铁6的开口下侧，导磁板12下端与检测头14固定连接，检测头14下端伸出检测口4，U形磁铁6的一个竖直部上缠绕有一组连接电源7的磁力线圈10，另一个竖直部上缠绕有连接检测电路9的感应线圈11，检测电路9连接外部的信号处理模块，信号处理模块连接控制系统。由于U形磁铁6的开口端磁阻非常大，会导致磁力线圈10产生的磁力线无法到达感应线圈11，所以没有物料及钢球群5时，检测电路9检测不到感应线圈11的电流，也就不产生信号，当有物料及钢球群5时，检测头14会推动导磁板12插入U形磁铁6的开口端，导磁板12的磁阻相对空气小得多，此时磁力线圈10产生的磁力线就可以到达感应线圈11，感应线圈11也就可以产生电流，检测电路检测到感应线圈11内的电流从而产生信号，电信号通过检测电路传送至信号处理模块并转化为数字信号，数字信号输送至控制系统，控制系统根据数字信号的不同对变频电机和风机发出不同的指令。Referring to FIG. 3 , the upper part of the detection port 4 is sealed by the top cover 2 of the tube mill, and a hole communicating with the detection port 4 is opened on the shell wall of the tube mill casing 1 . A detection device is installed in the detection port 4. The detection device includes a U-shaped magnet 6, a magnetic guide plate 12 and a detection head 14. The open end of the U-shaped magnet 6 faces the inside of the tube mill casing 1, and the magnetic guide plate 12 is arranged on the U-shaped On the lower side of the opening of the magnet 6, the lower end of the magnetic guide plate 12 is fixedly connected with the detection head 14, and the lower end of the detection head 14 stretches out from the detection port 4, and a group of magnetic coils 10 connected to the power supply 7 are wound on a vertical part of the U-shaped magnet 6. The other vertical part is wound with an induction coil 11 connected to a detection circuit 9, the detection circuit 9 is connected to an external signal processing module, and the signal processing module is connected to a control system. Because the reluctance of the open end of the U-shaped magnet 6 is very large, the magnetic field lines produced by the magnetic force coil 10 cannot reach the induction coil 11, so when there is no material and steel ball group 5, the detection circuit 9 cannot detect the current of the induction coil 11, and the detection circuit 9 cannot detect the current of the induction coil 11. No signal will be generated. When there are materials and steel ball groups 5, the detection head 14 will push the magnetic guide plate 12 to insert into the opening end of the U-shaped magnet 6. The magnetic resistance of the magnetic guide plate 12 is much smaller than that of air. At this time, the magnetic force coil The magnetic field lines generated by 10 can reach the induction coil 11, and the induction coil 11 can also generate current. The detection circuit detects the current in the induction coil 11 to generate a signal, and the electric signal is transmitted to the signal processing module through the detection circuit and converted into a digital signal. The digital signal is sent to the control system, and the control system sends different instructions to the frequency conversion motor and fan according to the difference of the digital signal.
检测头14下部为圆柱体，检测头14上部为圆锥体，圆锥体顶部连接有金属薄片13，金属薄片13的圆周与检测口内壁固定连接，导磁板12下端通过一个圆形连接柱连接金属薄片13的中部，所述仓室内的物料挤压检测头14，检测头14推动导磁板12伸入U形磁铁6的开口内，改变U形磁铁6开口端的磁阻。The lower part of the detection head 14 is a cylinder, the upper part of the detection head 14 is a cone, the top of the cone is connected with a metal sheet 13, the circumference of the metal sheet 13 is fixedly connected with the inner wall of the detection port, and the lower end of the magnetic guide plate 12 is connected to the metal through a circular connecting column In the middle part of the thin slice 13, the material in the warehouse squeezes the detection head 14, and the detection head 14 promotes the magnetic guide plate 12 and stretches into the opening of the U-shaped magnet 6 to change the reluctance of the U-shaped magnet 6 open ends.
U形磁铁6的开口端嵌入壳壁上的孔内，孔与管磨机机壳1内部连通的一端安装非金属材质的密封保护罩15。密封保护罩15采用聚氨酯树脂制作而成。U形磁铁6的上端为封闭端，并在封闭端开孔，电源7固定在该孔内。The opening end of the U-shaped magnet 6 is embedded in the hole on the shell wall, and a non-metallic sealing protective cover 15 is installed at the end that the hole communicates with the inside of the tube mill casing 1 . The sealing protective cover 15 is made of polyurethane resin. The upper end of the U-shaped magnet 6 is a closed end, and a hole is opened at the closed end, and the power supply 7 is fixed in the hole.
U形磁铁6由多片硅钢片叠加组合而成。U形磁铁6上端通过顶板8进行定位固定，U形磁铁6下端的开口端呈尖锐锐角状伸出密封保护罩15，并与密封保护罩15紧密贴合密封，管磨机机壳1内部的物料无法进入检测口4中。检测电路9通过无线方式连接信号处理模块，连接一无线发射装置，无线发射装置将检测电路9检测的信号通过无线的方式发射给控制系统。具体的，信号处理模块采用无线传输电流互感器，无线传输电流互感器可以无线接收检测电路9发出的电信号并转化为数字信号。无线传输电流互感器连接控制系统，控制系统可以控制变频电机内的变频器以及外部的风机。The U-shaped magnet 6 is formed by stacking and combining multiple silicon steel sheets. The upper end of the U-shaped magnet 6 is positioned and fixed by the top plate 8, and the opening end of the lower end of the U-shaped magnet 6 protrudes out of the sealing protective cover 15 in a sharp and acute angle, and is tightly fitted and sealed with the sealing protective cover 15. Materials cannot enter the detection port 4. The detection circuit 9 is wirelessly connected to the signal processing module and connected to a wireless transmitting device, and the wireless transmitting device transmits the signal detected by the detection circuit 9 to the control system in a wireless manner. Specifically, the signal processing module adopts a wireless transmission current transformer, and the wireless transmission current transformer can wirelessly receive the electrical signal sent by the detection circuit 9 and convert it into a digital signal. The wireless transmission current transformer is connected to the control system, and the control system can control the frequency converter in the frequency conversion motor and the external fan.
上述实施例中的无线传输电流互感器也可以改用无数据采集卡。其作用均是将电信号转化为数字信号，并发送给控制系统。The wireless transmission current transformer in the above embodiments can also be replaced with a data acquisition card. Its role is to convert electrical signals into digital signals and send them to the control system.
一种利用电磁式多仓管磨机胀肚检测装置进行预胀肚调控方法，包括如下步骤：A method for pre-expansion control using an electromagnetic multi-chamber tube mill expansion detection device, comprising the following steps:
第一步、设备安装：安装管磨机至工作位置并固定调试设备，在管磨机的检测口4内安装检测装置；The first step, equipment installation: install the tube mill to the working position and fix the debugging equipment, install the detection device in the detection port 4 of the tube mill;
第二步、模拟管磨机工作并标定管磨机胀肚状态，得出管磨机胀肚状态下检测头14处在物料及钢球群5中的时间T0：通过管磨机检测口4向管磨机内部加入少量球石，启动变频电机带动管磨机以正常工作速度转动，启动矿料输送皮带以正常工作速度向管磨机内部输送物料及钢球群，使管磨机正常工作，同时，操作员人工监测管磨机内部状况，若运行正常则提高矿料输送皮带速度，提高矿料添加速度，继续监测，直至管磨机其中任一仓室进入胀肚状态，记录各个仓室中的检测头14处在物料及钢球群5中的时间T0，则T0为在该型号管磨机在研磨该物料及钢球群时，发生胀肚状态时检测头14处在物料及钢球群5中的时间；The second step is to simulate the work of the tube mill and calibrate the expansion state of the tube mill, and obtain the time T0 when the detection head 14 is in the material and the steel ball group 5 under the expansion state of the tube mill: through the detection port 4 of the tube mill Add a small amount of ball stones to the inside of the tube mill, start the frequency conversion motor to drive the tube mill to rotate at a normal working speed, start the mineral material conveying belt to transport materials and steel balls to the inside of the tube mill at a normal working speed, and make the tube mill work normally , at the same time, the operator manually monitors the internal conditions of the tube mill. If the operation is normal, increase the speed of the mineral material conveying belt, increase the rate of mineral material addition, and continue to monitor until any compartment of the tube mill enters the state of expansion, and record the status of each compartment. The time T0 when the detection head 14 in the chamber is in the material and the steel ball group 5, then T0 is when the tube mill of this type grinds the material and the steel ball group, the detection head 14 is in the material and the steel ball group when the bulging state occurs. The time in the steel ball group 5;
第三步、正常工作，并对管磨机旋转一周输出的信号和时间进行实时采集，记录各个仓室中的检测头14分别处在物料及钢球群5中的时间T；The third step is to work normally, and collect the signal and time output by the tube mill for one rotation in real time, and record the time T when the detection heads 14 in each chamber are respectively in the material and the steel ball group 5;
第四步、根据时间T数据调控管磨机在预胀肚状态运转：控制系统接受信号处理模块反馈的数字信号，并判断数字信号的时间T，根据时间T的数值大小，发出相应指令控制矿料输送皮带以及风机工作，使管磨机保持预胀肚状态运转。The fourth step is to adjust the tube mill to run in the pre-expansion state according to the time T data: the control system receives the digital signal fed back by the signal processing module, and judges the time T of the digital signal, and sends corresponding instructions to control the mine according to the value of the time T. The material conveying belt and fan work to keep the tube mill running in the pre-expanded state.
操作员人工监测管磨机内部任一仓室进入胀肚状态的方法包括主要包括以下几个方面：The method for the operator to manually monitor any chamber inside the tube mill to enter the bulging state mainly includes the following aspects:
1、管磨机主电机电流表指示电流在不断下降；1. The ammeter of the main motor of the tube mill indicates that the current is continuously decreasing;
2、管磨机运转声音沉闷，噪音变小，几乎听不见钢球的冲击与泻落的声音；2. The running sound of the tube mill is dull, the noise becomes smaller, and the impact and falling sound of the steel ball can hardly be heard;
3、管磨机给矿端有矿浆向外溢出；3. There is ore slurry overflowing from the feeding end of the tube mill;
4、出口矿料开始变粗，返砂量在逐渐加大，溢流浓度增加、粒度变粗；4. The export mineral material begins to become thicker, the amount of sand returning is gradually increasing, the overflow concentration increases, and the particle size becomes coarser;
5、浮选泡沫有明显变化，浮选药剂作用失调，矿化现象减弱等。5. The flotation foam has obvious changes, the function of the flotation agent is out of balance, and the mineralization phenomenon is weakened.
根据时间T数据调控管磨机在预胀肚状态运转的方法为：The method of controlling the operation of the tube mill in the pre-expansion state according to the time T data is as follows:
1、当管磨机中所有仓室的时间T数值小于该仓室的T0*80%时，管磨机低于预胀肚状态运行，控制系统发出指令，加大风机和矿料输送皮带的运行速度，逐步加大第一仓室的矿料输入；1. When the time T value of all chambers in the tube mill is less than T0*80% of the chamber, the tube mill operates below the pre-expansion state, and the control system issues instructions to increase the fan and mineral conveying belt. Operating speed, gradually increase the input of mineral materials in the first warehouse;
2、当管磨机中任一仓室的时间T数值等于该仓室的T0*80%时，管磨机保持预胀肚状态运行，控制系统发出指令，使风机转速保持稳定，矿料运输皮带的速度保持稳定；2. When the time T value of any chamber in the tube mill is equal to T0*80% of the chamber, the tube mill will keep running in the pre-expansion state, and the control system will issue instructions to keep the fan speed stable, and the ore material will be transported The speed of the belt remains stable;
3、当管磨机中任一仓室的时间T数值大于该仓室的T0*80%时，管磨机突破预胀肚状态控制系统发出指令，减少矿料运输皮带的速度，逐步减少仓室的矿料输入量，并保持风机转速不变；3. When the time T value of any chamber in the tube mill is greater than T0*80% of the chamber, the tube mill breaks through the pre-expansion state control system and sends an instruction to reduce the speed of the mineral material transport belt and gradually reduce the number of bins. The amount of mineral material input to the chamber, and keep the fan speed constant;
4、当管磨机中任一仓室的时间T数值大于该仓室的T0*90%时，管磨机即将进入胀肚状态，控制系统控制风机以最大速度转动，同时停止矿料运输皮带的运行，停止第一仓室的矿料输入，直至时间T数值等于T0*80%，使管磨机在预胀肚状态运行。4. When the time T value of any chamber in the tube mill is greater than T0*90% of the chamber, the tube mill is about to enter the bulging state, and the control system controls the fan to rotate at the maximum speed, and at the same time stops the mineral material conveying belt Stop the input of mineral materials in the first warehouse until the value of time T is equal to T0*80%, so that the tube mill runs in the pre-expansion state.
记录检测头14处在物料及钢球群5中的时间T的具体方法为：当没有物料及钢球群5施加压力到检测头14下端时，检测头14上端的金属薄片13不产生位移，导磁板12位于U形磁铁6的开口端下方，U形磁铁6的磁阻大导致感应线圈11内没有电流产生，检测电路9无信号产生；当有物料及钢球群5施加压力到检测头14下端时，检测头14下端圆柱体把压力通过顶部圆锥体传递到金属薄片13的中心位置，中心位置承受压力而凸起变形，变形量通过圆形连接柱使导磁板12产生位移，导磁板12插入U形磁铁6的开口端内，U形磁铁6的磁阻降低导致感应线圈11内产生电流，检测电路9检测到电流并产生信号，检测电路9将电信号传递给信号处理模块并转化成数字信号输出，同时记录有数字信号产生的时间为T，则T为检测头14处在物料中的时间。The specific method for recording the time T when the detection head 14 is in the material and steel ball group 5 is: when no material and steel ball group 5 apply pressure to the lower end of the detection head 14, the metal sheet 13 at the upper end of the detection head 14 does not shift, The magnetic guide plate 12 is located below the open end of the U-shaped magnet 6. The large reluctance of the U-shaped magnet 6 causes no current to be generated in the induction coil 11, and no signal is generated by the detection circuit 9; when there is material and the steel ball group 5 applies pressure to the detection At the lower end of the head 14, the cylinder at the lower end of the detection head 14 transmits the pressure to the center of the metal sheet 13 through the top cone, and the center is under pressure and deformed. The magnetically conductive plate 12 is inserted into the open end of the U-shaped magnet 6, and the reluctance of the U-shaped magnet 6 decreases to cause a current to be generated in the induction coil 11, and the detection circuit 9 detects the current and generates a signal, and the detection circuit 9 transmits the electric signal to the signal processing module and convert it into a digital signal output, and record the time when the digital signal is generated as T, then T is the time when the detection head 14 is in the material.
以上所述，仅是本发明的较佳实施例而已，并非是对本发明作其它形式的限制，任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例。但是凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与改型，仍属于本发明技术方案的保护范围。The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belong to the protection scope of the technical solution of the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| CN201510983788.7ACN105478216B (en) | 2015-12-24 | 2015-12-24 | Tripe detection means that a kind of electromagnetic type multi-compartment tube grinding machine is swollen and pre-swollen tripe regulation and control method |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510983788.7ACN105478216B (en) | 2015-12-24 | 2015-12-24 | Tripe detection means that a kind of electromagnetic type multi-compartment tube grinding machine is swollen and pre-swollen tripe regulation and control method |
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| CN105478216Atrue CN105478216A (en) | 2016-04-13 |
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| CN201510983788.7AExpired - Fee RelatedCN105478216B (en) | 2015-12-24 | 2015-12-24 | Tripe detection means that a kind of electromagnetic type multi-compartment tube grinding machine is swollen and pre-swollen tripe regulation and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4635858A (en)* | 1981-01-09 | 1987-01-13 | W. R. Grace & Co. | Methods of operating ball grinding mills |
| CN101733188A (en)* | 2010-01-13 | 2010-06-16 | 济南大学 | Ball mill positioning shutdown control system and control method thereof |
| CN102179278A (en)* | 2011-03-28 | 2011-09-14 | 山东理工大学 | Automatic speed regulation system and method for ball milling machine |
| CN104069917A (en)* | 2014-07-01 | 2014-10-01 | 山东理工大学 | Ball mill impact force detection device and impact force detection and ball mill speed regulation method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4635858A (en)* | 1981-01-09 | 1987-01-13 | W. R. Grace & Co. | Methods of operating ball grinding mills |
| CN101733188A (en)* | 2010-01-13 | 2010-06-16 | 济南大学 | Ball mill positioning shutdown control system and control method thereof |
| CN102179278A (en)* | 2011-03-28 | 2011-09-14 | 山东理工大学 | Automatic speed regulation system and method for ball milling machine |
| CN104069917A (en)* | 2014-07-01 | 2014-10-01 | 山东理工大学 | Ball mill impact force detection device and impact force detection and ball mill speed regulation method |
| Publication number | Publication date |
|---|---|
| CN105478216B (en) | 2017-12-22 |
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