The Development Of Precise Dosing Machine Measure Valve And Analysis Of Its Reliability

In vacuum epoxy resin dosing machine, measuring-valve is a very important parts. It's characteristic, sealing and service life will directly connect with the degree of vacuum, the precision of mearsure of vacuum epoxy resin dosing machines. And the precision of measure is the primary guaranty of the dosing quality of dosing machine. Therefore, if we want to improve the dosing quality of the vacuum epoxy resin dosing machine, we must improve the characteristic of measuring-valve.In this paper, in order to solve the prombles of measuring-valve on hand, we improved it's structure.Analysis the relations between the structure of measuring-valve and the precision of mearsure. Though compare with different structure and their characteristic, we put forward a new structure design.Though the analysis of static and dynamic characteristic of electromagnetism system, we had studied the mesures which can improve the dynamic characteristic of the measuring-valve.We had built a mathematical model of optimum-design of measuring-valve's structure parameter. And compiled the program of optimum-design. We had also studied the control circuit , protect circuit and dynamic testing of the measuring-valve.After the design of machinery and electromagnetism structure, we had a further studied of the service life and reliability of the measuring-valve. We had analysised and reseached the chiefly inefficacy form of measuring-valve. And we use the accelerative lifespan experiment to reseach and questioned the improved measures of measuring-valve.