篮式研磨机的选择与比较

发布时间:2017/6/5 18:47:29

篮式研磨机是适用于液-液相、液-固相混合、溶解和研磨的高效设备。高速旋转的锯齿状研磨盘可以完成固液研磨、湿润、解聚，使浆液呈环状流滚动，产生强旋涡，浆液表面粒子呈螺旋状下降到涡流底部，浆料得到充分循环及翻动。

　　虽然是篮式研磨机，但是也不是一直都处于高速运转的状态，一般都是根据不同的工艺时段选择不同的研磨速度，因此篮式研磨机一定需要调试功能。

　　目前市场上的研磨机常规有变频器调速和电磁调速2种方式，下面我们就来对比下这2种调速方式的优缺点，用户可以根据自己需要进行选择。

Basket grinding machine is suitable for liquid - liquid, liquid - solid mixing, dissolution and grinding of efficient equipment. High speed rotating grinding disc grinding, sawtooth can complete solid-liquid wetting, depolymerization, slurry in annular flow rolling, resulting in strong vortex particle sizing surface spiral down to the bottom of full circulation slurry vortex, and turning.

Although it is a basket grinder, it is not always in the state of high-speed operation. It is usually based on different process time to choose different grinding speed. Therefore, the basket type grinding machine needs debugging function.

At present, the grinder on the market has 2 modes of frequency control and electromagnetic speed regulation. We will compare the advantages and disadvantages of these 2 speed regulation methods. The user can choose according to his own needs.

　　1、调速原理

　　变频调速研磨机是通过变频器改变电机工作电源的频率达到电机调速目的。将原来电源频率50HZ改为0.2-50HZ，相应的研磨机的转速在0-1440转根据电源频率随意可调。电磁调速研磨机是通过调整磁场强度来实现变速的。电磁调速电机有一套独立的电磁滑差调速装置，电机本身的转速没有任何改变，电磁滑差有5根线，两根是220伏电源，3根是调速器给的信号和反馈速度信号，通过改变滑差的电压来控制滑和差，从而改变输出转速。

　　2、输出扭矩

　　变频器调速研磨机启动力矩大，能够力矩补偿，适合起始固体含量高或粘稠度高的物料。平稳运转的扭矩情况是：电磁调速相当于一个手动变速箱，因为电机速度不变，所以扭矩大，适用于粘度变化小的高粘物料低速搅拌。变频器带动的电机如果低速运转就不能带动扭矩大的负载。

　　3、能耗

　　电磁调速研磨机的电机不管研磨机转速快慢，本身一直处于高速运转状态，属于低效率的调速方式，转速越低，电能浪费越大。变频调速属于高效调速方式，电机的输入功率随转速的下降成比例的降低。以11KW的研磨机为例，每天运行8小时，一年300个工作日，当转速在1000r/min时，电磁调速研磨机年能耗电量=11×300×8=26400度，变频调速研磨机电能耗量=11×1000÷1440×300×8=18333度，对比节能8066度电，工业电费0.7元，一年节省5646元，800r/min时，节省电费8213元，转速越低，变频约节能。

1 、 speed regulation principle

Frequency conversion speed grinding machine is to change the frequency of motor power supply through frequency converter to achieve the purpose of motor speed control. The original power frequency 50HZ changed to 0.2-50HZ, the corresponding grinding machine speed at 0-1440 rpm, according to the power frequency adjustable at will. The electromagnetic speed regulating grinding machine realizes the speed change by adjusting the magnetic field strength. The electromagnetic adjustable speed motor has a set of independent electromagnetic slip speed control device, the speed of the motor itself without any change of the electromagnetic slip have 5 lines, two 220 volt power supply, 3 signal and feedback signal to the governor to control the speed, slip and slip difference by changing the voltage, thereby changing the output speed.

2 、 output torque

Frequency converter speed grinding machine starting torque, torque compensation, suitable for the beginning of solid content or high viscosity of the material. Smooth running torque is: electromagnetic speed is equivalent to a manual transmission, because the motor speed is constant, so the torque is big, suitable for low viscosity change of high viscosity material low-speed mixing. If the motor is driven by the low frequency, it can not drive the load with great torque.

3, energy consumption

Electromagnetic speed grinding machine motor, regardless of the speed of grinding machine speed, itself has been in a high-speed state, belongs to the low efficiency of speed regulation, the lower the speed, the greater the waste of electricity. Variable frequency speed regulation belongs to efficient speed regulation, and the input power of motor decreases proportionally with the decrease of speed. The grinding machine 11KW as an example, running 8 hours a day, 300 days a year, when the speed at 1000r/min, electromagnetic speed grinding machine energy consumption =11 * 300 * 8=26400, variable speed grinding of electromechanical energy consumption =11 x 1000 / 1440 x 300 x 8=18333, comparison of energy-saving 8066 kwh of power industry a year to save electricity 0.7 yuan, 5646 yuan, 800r/min, save electricity 8213 yuan, the lower the speed, frequency about energy saving.

　　4、设备成本

　　早几年变频器价格昂贵，变频篮式研磨机的价格整体比电磁研磨机价格贵上3000元左右，不过当日变频器成本降低，变频研磨机在价格上仅仅比电磁研磨机整体贵1000元以内。

　　5、维护成本

　　电磁研磨机的电机价格高于变频电机，变频器如果使用品牌的产品，寿命长，维护成本不高。上海穗兴机电发展有限公司使用的是西门子等品牌重型变频器，电器元件一年内出现问题，免费更换新的。消除客户对变频器维护的忧虑。

　　总结：多方面对比变频器调速研磨机从节能和维护使用上优势明显，客户可以根据自己的实际情况进行选择。

4. Equipment cost

A few years ago the price of inverter frequency expensive basket grinder overall price than the electromagnetic grinding machine on the price of your 3000 yuan, but the converter cost is reduced, the frequency grinding machine in price than the electromagnetic grinding machine overall 1000 yuan or less expensive.

5, maintenance costs

The electromagnetic grinding machine motor price is higher than the frequency conversion motor, the frequency converter if uses the brand product, the service life is long, the maintenance cost is not high. Shanghai SuiXing electromechanical Development Co. Ltd. is the use of brands such as SIEMENS heavy inverter, electrical components within a year of problems, the replacement of the free. Eliminate customer concerns about frequency converter maintenance.

Summary: in many ways, compared with the frequency converter speed grinder, from the energy saving and maintenance of the advantages of obvious, customers can choose according to their actual situation.