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气动冲击器的配气阀在气流的作用下往复运动于阀盖与阀座之间,用来控制活塞的往复运动。常用的方形、圆形和圆环形的片状阀,具有形状简单,加工方便,气路阻力小等优点。但是阀片在使用时容易破碎,使用寿命较短。一台冲击器的阀片寿命一般只有50～100米,最高也只有1000米,波动较大,阀片破裂时需在现场拆卸冲击器,调换阀片,不但影响作业进度,而且极为不便。因此,研究并解决阀片的破裂问题是很有必要的。本文将研究圆形和方形阀片与阀座碰撞时的冲击速度和最大冲击应力的计算方法,
Pneumatic impactor valve with the role of gas flow back and forth movement between the valve cover and valve seat, used to control the piston reciprocating motion. Common square, round and circular sheet valve, with a simple shape, easy processing, air resistance and other advantages. However, when used in the valve is easy to break, short life. The life span of an impactor’s valve is only 50-100 meters and the maximum is only 1000 meters. When the valve is broken, the impactor needs to be disassembled at the scene to change the valve. This will not only affect the operation progress but also be very inconvenient. Therefore, it is necessary to study and solve the problem of valve rupture. This article will study the calculation method of the impact velocity and the maximum impact stress when the circular and square valve plates collide with the valve seat,