A unit for crankshaft professional manufacturers. S1 - 130B、S1- 247 two plane is processing the crankshaft connecting rod and the main production equipment, main journal neck often occurs in the process of production to plunge the knife, however, light is broken artifacts, or damage to machine tool, not only increase the maintenance cost and impact the production. Maintenance personnel to find out the cause of the problem is a one-way trip throttle problem, but after a new Industrial Valves repair or replacement, failed to fundamentally solve the problem. 1, the cause of the problem analysis of the role of the one-way trip throttle is a knife in the process of retreat quickly check valve is opened, when work feed check valve closed, fluid flow through the CAM control throttle mouth feed, feed in order to realize the work; Throttling mouth size is controlled by a mechanical no problem, so failure on one-way Industrial Valves seal. The check valve adopts the ball round hole forms, because both are rigid contact, the frequent switch makes the orifice fatigue damage, sealing is reduced, cause an accident; At the same time because of the oil might be particle pollution, easy to be attached to the rigid contact seal surface, so that the check valve closed lax, also can cause knife, cause an accident. 2, solution to determine the first with a hammer ball repair contact surface, the results the success rate is very low and the problems to eliminate; Later, after careful study, bold ideas from the aspects of changing the rigid contact, then USES the replacement method of ball ball, electric wood pellets for glue, however through experiments for the two ball easy wear failure; Through changing the material of the sealing orifice finally to experiment, from soft materials such as copper, aluminum, nylon screening analysis, finally selected nylon, due to the material has good toughness and elasticity, and contact with the ball will have a very good sealing and long life. After practice shows good effect. 3, the improvement methods will be the original hole end face sealing, with flat drill cutting 3 ~ 4 mm deep, then add a circle made of pure ptfe pad, pay attention to the moderation for sealing hole chamfer. Cushion between the body and want to use rubber seal, in case of leakage. 4, effect using the method of our company successively to nearly 30 one-way trip throttle valve is reformed, effect is very good, greatly extend the service life. Fundamentally eliminate the phenomenon of Mr Dao, created considerable benefits for the company.
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