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发明涉及钻探技术,与液动冲击器有关。发明的目的在于提高液动冲击器的孔底功率。正作用液动冲击装置(见图1)包括外壳1、带弹簧3的阀2、在阀2下设有限位台阶4、活塞5、带有空心阀7的上接头6(紧固在外壳1上)。在阀7的下端有喷口8,中心水孔9系送水通道。在阀7和外壳1的内表面之间可形成环状室10(见图2),在阀2之上、套在阀7的外面有一阀套11,它可作轴向移动。在阀套11的上下两端面的内径开有上环槽12和下环槽13。在
The invention relates to drilling technology, relating to a hydraulic impactor. The purpose of the invention is to increase the bottom hole power of the liquid impactor. 1) comprises a housing 1, a valve 2 with a spring 3, a limiting step 4 under the valve 2, a piston 5, an upper joint 6 with a hollow valve 7 (fastened to the housing 1 on). At the lower end of the valve 7 there is a spout 8, the central water hole 9 is a water channel. Between the valve 7 and the inner surface of the housing 1, an annular chamber 10 (see Fig. 2) is formed. Above the valve 2 there is a valve sleeve 11 which is axially displaceable outside the valve 7. The valve housing 11, The upper and lower end surfaces of the valve sleeve 11 are provided with an upper ring groove 12 and a lower ring groove 13. in