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本发明涉及一种安全节流阀,包括阀体、锥阀芯和滑阀阀芯。阀体内具有第一容腔和第二容腔,锥阀芯设置在第一容腔内,滑阀阀芯设置在第二容腔内。锥阀芯和阀体之间设置有弹簧一,阀体上开有径向孔一。滑阀阀芯内轴向设有第三容腔和第四容腔,滑阀阀芯开有径向孔二和径向孔三,径向孔二与第三容腔连通,径向孔三与第四容腔连通。第三容腔和第四容腔之间
The present invention relates to a safety throttle including a valve body, a cone valve spool and a spool valve spool. The valve body has a first cavity and a second cavity, the cone valve core is arranged in the first cavity, and the spool valve core is arranged in the second cavity. A spring is arranged between the conical valve core and the valve body, and a radial hole is formed on the valve body. A third cavity and a fourth cavity are axially arranged in the spool valve spool, the spool valve core is provided with a radial hole two and a radial hole three, the radial hole two is communicated with the third cavity, the radial hole three Communicating with the fourth cavity. Between the third cavity and the fourth cavity