旋装式机油滤清器

Spin-on lubricating oil filter

Abstract

A spin-on lubricating oil filter comprises a casing, a threaded cover plate subassembly, a filtering element subassembly, a safety valve, and a spring. The filtering element subassembly comprises a central tube, filter paper, an upper cover and a lower cover. The safety valve is positioned inside the central tube and comprises a valve base, a valve spring and a valve plate, wherein the valve base comprises an annular plate and two vertical outwardly convex cylindrical face plates perpendicularly connected with the outer edge of the annular plate, the two cylindrical face plates are symmetric with each other and are spacedly arranged, a claw at the upper end of each cylindrical face plate is clamped with the upper end of the valve spring, and the lower end of the valve spring is in close contact with the valve plate; and fluid passages are arranged between the two cylindrical face plates. The safety valve is connected with the central hole of lower cover in a flanging way through the central hole of the annular plate, and the upper end and the lower end of the spring are in close contact with the central region of the bottom surface of the lower cover and the lower end of the casing respectively. A filter screen is arranged between the valve plate and the annular plate, the shape and specification of the filter screen are sufficient to cover the central hole of the annular plate, and the valve plate is in fluid tight fit with central hole through the filter screen. The lubricating oil filter can effectively protect an internal combustion engine.
旋装式机油滤清器,它包括外壳、螺纹盖板分总成及滤芯分总成、安全阀、弹簧,滤芯分总成有中心管、滤纸、上盖和下盖,安全阀位于中心管内,它包括阀座、阀用弹簧、阀片,阀座由环形板、与该板外缘垂直相接的两个竖直状外凸柱面板构成,两个柱面板相互对称且间隔布置,每个柱面板上端的卡爪卡住阀用弹簧的上端,阀用弹簧的下端与阀片紧密接触,两个柱面板之间有流体通道,安全阀通过环形板的中心孔与下盖的中心孔采用卷边方式连接,弹簧的上下端分别与下盖的底面中心区域、外壳的下端紧密接触,阀片与环形板之间有一形状和规格足以将环形板的中心孔遮盖住的滤网,阀片经滤网与该中心孔呈液密封配合。本滤清器可有效地保护内燃机。

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