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近10年来我国血液透析事业发展迅速,但血液透析机还主要依赖进口。美国WILLOCK公司480系列血液透析机在我国具有一定的占有量。血液透析机是集水(透析液)、液(血液)、电于一体的复杂设备,液体阀在整机控制系统中起着主导作用。480系列血液透析机液体阀可分为阀体和控制体两部分,阀的工作电压为直流24V,阀体外壳为一次注塑成型的全密封结构,线包被牢牢地封在中间,通过固定在侧面的三个脚与电路连接,三个脚呈等腰三角形,处于顶角位置的脚是接地线的,余下的两脚接电源。在透析过程中,液体阀故障率较高,故障都出在注塑体内线包上。在国外该阀是属于一次性使用的,国内又不生产这种阀,各单位只好将损坏的阀报废,通过国外的代理公司向美国生产厂家购买价格昂贵的新阀,如果是期货,就要停机等几个月时间。
In the past 10 years, the development of hemodialysis in China has been rapid. However, hemodialysis machines mainly rely on imports. The United States WILLOCK company 480 series hemodialysis machines in China have a certain amount of possession. The hemodialysis machine is a complex device that collects water (dialysate), liquid (blood), and electricity, and the liquid valve plays a leading role in the overall control system. 480 series hemodialysis machine liquid valve can be divided into two parts: the valve body and the control body. The working voltage of the valve is DC 24V. The valve body shell is a fully sealed structure with one injection molding. The wire package is firmly sealed in the middle and fixed. The three legs on the side are connected to the circuit, three legs are isosceles triangles, the feet in the top corner position are ground lines, and the remaining two feet are connected to the power supply. During the dialysis process, the liquid valve has a high failure rate, and the failures are in the package. In foreign countries, the valve is a one-time use, but the domestic does not produce such a valve. Each unit has to scrap the damaged valve and purchase the new expensive valve from the American manufacturer through a foreign agent company. If it is a futures market, it must Stop for a few months.