变频分散机与电磁分散机的区别比较与选择

发布时间:2017/6/5 18:55:00

高速分散机是适用于液-液相、液-固相混合、溶解和分散的高效设备。高速旋转的锯齿状分散盘可以完成固液分散、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。

　　虽然是高速分散机，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分散速度，因此高速分散机一定需要调试功能。

　　目前市场上的分散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。

High speed disperser is suitable for liquid-liquid phase, liquid solid phase mixing, dissolution and dispersion of high efficiency equipment. High speed rotating zigzag dispersion plate can complete solid-liquid dispersion, wetting, depolymerization, the slurry is 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 high-speed disperser, but it is not always in the state of high-speed operation, it is usually based on different process time to choose a different dispersion speed, so high-speed disperser must debug function.

At present, the market of conventional inverter speed control and electromagnetic speed regulation in 2 ways, the following we will compare the advantages and disadvantages of these 2 speed regulation, the user can choose according to their needs.

　　1、调速原理

　　变频调速分散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，相应的分散机的转速在0-1440转根据电源频率随意可调。电磁调速分散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

　　变频器调速分散机启动力矩大，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。

1 、 speed regulation principle

Frequency conversion speed regulating machine is to change the frequency of motor power supply by frequency converter to achieve the purpose of motor speed regulation. The original power frequency 50HZ changed to 0.2-50HZ, the corresponding speed of the distributor is 0-1440 rpm, according to the power frequency can be adjusted at will. The electromagnetic speed regulating dispersing machine realizes the speed change by adjusting the magnetic field intensity. 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

The frequency converter is of high starting torque and torque compensation. It is suitable for materials with high initial solid content or high viscosity. 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、能耗

　　电磁调速分散机的电机不管分散机转速快慢，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的分散机为例，每天运行8小时，一年300个工作日，当转速在1000r/min时，电磁调速分散机年能耗电量=11×300×8=26400度，变频调速分散机电能耗量=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。

　　4、设备成本

　　早几年变频器价格昂贵，变频高速分散机的价格整体比电磁分散机价格贵上3000元左右，不过当日变频器成本降低，变频分散机在价格上仅仅比电磁分散机整体贵1000元以内。

3, energy consumption

The motor of the electromagnetic speed regulating dispersing machine, regardless of the speed and speed of the disperser, has been in a high-speed state at all times. It belongs to a low speed mode 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. A disperser 11KW for example, running 8 hours a day, 300 days a year, when the speed in the 1000r/min machine, the annual energy consumption of electricity =11 * 300 * 8=26400 electromagnetic speed dispersion, electrical energy consumption of =11 x 1000 / 1440 x 300 x 8=18333 of frequency dispersion, 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. Equipment cost

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