可冲洗单向节流阀

Washable one-way throttle valve

Abstract

The utility model discloses a washable one-way throttle valve which comprises a valve body, a valve core arranged in a valve body inner bore and a spring arranged in a valve core counter bore. The valve core is movably connected with the valve body inner bore. One end of the valve core is provided with a through hole which intersects with the valve core counter bore in a vertical mode. An outer cone surface of one end of the valve core is provided with a throttling groove which is through in the axial direction. One end of the spring abuts against the valve core step counter bore. The other end of the spring abuts against a locking ring at one end of the valve body inner bore. When the valve core is closed, the outer cone surface of one end of the valve core is pressed on the inner cone surface of the valve body inner bore. Due to the fact that one side of the outer cone surface of one end of the valve core is provided with the throttling groove which is through in the axial direction, the washable one-way throttle valve has the advantages of being simple in structure and not easy in clamping stagnation of foreign matter. Hydraulic oil is capable of washing the throttling groove effectively. The foreign matter in the throttling groove is washed away so that blocking is avoided, and therefore normal operation of the entire system is guaranteed, and operational safety of an excavator is improved greatly.
本实用新型公开了一种可冲洗单向节流阀,包括阀体、设置在阀体内孔中的阀芯以及位于阀芯台阶沉孔中的弹簧,阀芯与阀体内孔可移动连接,阀芯一端设有与阀芯台阶沉孔垂直相交的通孔,阀芯一端外圆锥面上设有轴向贯通的节流槽。弹簧一端抵靠在阀芯台阶沉孔上,另一端抵靠在阀体内孔一端的卡环上。阀芯关闭时,阀芯一端的外圆锥面压合在阀体内孔的内圆锥面上,本实用新型在单向阀阀芯一端外圆锥面一侧设置轴向贯通的节流槽,结构简单,异物不易卡滞,当液压油进油时,液压油可有效清洗节流槽,冲洗掉节流槽中的异物,防止堵塞,从而保证整个系统的正常运行,大大提高了挖掘机的操作安全性。

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    Publication numberPublication dateAssigneeTitle
    CN-105240336-AJanuary 13, 2016龙工(上海)精工液压有限公司Pilot buffer valve structure