用继电器组成的计数器 ,是一个很好的步进器 ,它能够根据输入脉冲的个数 ,逐次向前翻转计数。由步进器和输入矩阵、输出矩阵便组成了犁煤器配煤的自动控制装置。此外 ,还必须配置中煤位切换电路 ,具有跳步功能和召唤配煤功能 ,这样才构成完整的犁煤器自动配煤的功能 A counter made up of a relay is a good stepper that can flip the count forward one by one according to the number of input pulses. From the stepper and the input matrix, the output matrix will form an automatic control device coal blending coal. In addition, must also configure the coal bit switching circuit, with hopping function and summoning coal blending function, so as to form a complete coal pulverizer automatic blending function