Reasons and countermeasures for poor sealing of piston of high temperature resistant air cannon

　　The core of high temperature resistant air cannon is the high temperature resistant piston, which is responsible for sealing and opening the exhaust pipe of industrial air cannon. The high temperature resistance of piston directly affects the performance and life of the equipment working in a high temperature environment. After working for a period, especially in dusty areas.

　　Occasionally, air cannon is prone to the problem of piston leakage. This article introduces the basic reasons and countermeasures for the poor sealing of piston.

　　High-temperature resistant piston is mainly made of alloy aluminum or heat-resistant stainless steel. Since the material is metal rather than rubber, the smoothness of contact with barrel is particularly important. Since materials that need to be sprayed by industrial air cannon are mostly dust and particulate matter, they will counteract the material at the moment of impact of air cannon, resulting in a large amount of rising dust, which may enter the contact surface between the piston and barrel, thereby affecting the sealing performance of piston. For this problem, on the one hand, before installing a air cannon, the length of nozzle should be extended; on the other hand, in places with a lot of dust, an elbow at the outlet of industrial air cannon should be added to prevent the intrusion of dust.

　　The matching degree of piston, spring and bearing, after working for a period of time, the elastic fatigue of spring will easily cause piston to not be in the concentric position with bearing, which will lead to unevenness of the circumference of piston and air leakage of equipment.

　　The accumulation of debris and tiny particles in the air source pipeline of the equipment will also cause attachments between the piston and bearing, which will accumulate more and more over time, causing the problem of piston sticking. In this case, air source treatment parts should be used in the intake pipe to prevent debris from passing through the intake pipe and causing accumulation.

　　The above are the main reasons and countermeasures for poor sealing of high temperature resistant pistons. When using high-temperature-resistant air cannons in high-temperature areas such as cement kilns, grate coolers, and preheaters, measures should be taken according to local conditions to prevent and solve the problem of poor sealing of industrial air cannon pistons in time.