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目前,国内浮选厂大多采用杯式、轮式给药机或虹吸管式给药方式,既不准确,也不可靠,调节控制又不容易。近些年来,由科研部门推出的用计算机控制的给药装置售价昂贵。我们自制了一种简易的给药装置,使用效果良好,基本上满足了加药精度的要求,其执行机构见图。在液面恒定给药箱3里,由一个浮子4带动阀珠2,根据箱中液面的高低,控制球形阀珠2的开关,保持药箱3的液面恒定。其控制原理是,由脉冲电路发出脉冲信号,信号经光电偶合电路再经双向可控硅控制电磁阀的开启时间,从而控制给药量。脉
At present, most flotation plants in China use cup-type and wheel-type drug delivery machines or siphon-type drug delivery methods, which are neither accurate nor reliable and the control of adjustment is not easy. In recent years, computer-controlled drug delivery devices introduced by research departments have become expensive. We made a simple self-medication device, the use of good results, basically to meet the requirements of the dosing accuracy, the implementing agencies shown in Figure. In the constant liquid level tank 3, a float 4 drives the valve ball 2 to control the opening and closing of the spherical valve ball 2 according to the level of the liquid in the tank, so as to keep the liquid level of the medicine tank 3 constant. The control principle is issued by the pulse pulse signal circuit, the signal by the photoelectric coupling circuit and then through the triac control solenoid valve opening time, thereby controlling the dose. pulse