The antifouling and anti-overload valve comprises an inlet shell and an outlet shell which are connected with each other, a head supporting frame, a filter screen supporting frame and a corrugated filter screen are installed in an inner cavity of the antifouling and anti-overload valve, the head of a valve rod penetrates out of the head supporting frame, a spring is arranged on an optical axis section in the middle of the valve rod in a sleeved mode, and a boss at the tail of the valve rod serves as a spring seat. The two ends of the spring abut against the spring seat and the inner wall of the head supporting frame, a boss at the tail of the valve rod and the filter screen supporting frame form cylindrical pair sliding fit, a sleeve type sealing ring is installed between the head of the valve rod and the head supporting frame, and the corrugated filter screen is welded to the outer circumference of the filter screen supporting frame. The head supporting frame is provided with an oil through hole communicated with the sleeve type sealing ring cavity and the spring cavity, and the front cavity and the rear cavity of the valve tail boss are also communicated. Clamping stagnation caused by the influence of redundant substances in fuel can be prevented, the control function of the valve on oil flowing when the aircraft is in different postures can be achieved, and meanwhile the influence of the redundant substances generated by unclean oil on the function of the valve is eradicated through the structure of the valve.
本发明公开了一种防污防过载活门,包括相互连接的进口壳体和出口壳体,其内空腔安装有头部支撑架,滤网支撑架,波折式滤网,活门杆头部穿出头部支撑架,活门杆中部的光轴段套装有弹簧,活门杆尾部凸台作为弹簧座,弹簧的两端顶触在弹簧座和头部支撑架内壁,活门杆尾部凸台和滤网支撑架形成圆柱副滑动配合,活门杆头部和头部支撑架之间安装有套式密封环,波折式滤网焊接在滤网支撑架外圆周上,头部支撑架上设有连通套式密封环空腔和弹簧空腔的通油孔,活门尾部凸台前后空腔也连通。本发明能够防止燃料中多余物影响造成卡滞,能够实现飞行器不同姿态时活门对油液流动的控制功能,同时依靠自身结构杜绝不洁油液产生的多余物对活门功能的影响。
Antifouling and anti-overload valve
一种防污防过载活门
2025-01-03
Patent
Electronic Resource
Chinese
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |