煤电钻湿式打眼进水阀申请号：９４１１１４８６．４中国矿业大学李炳文等发明。该阀主轴与进水套两头用轴承套及轴承连接，轴承套内侧有两个活塞，主轴与轴承套及活塞间均设有密封圈及密封补偿装置，进水阀两端连接有端盖。主轴右端连接有螺纹套并与钻杆连接，进水套侧壁... Coal drill wet drilling water inlet valve application number: 94111486.4 China University of Mining Lee Bingwen invention. The valve spindle and water inlet sleeve both ends of the bearing sleeve and bearing connections, the bearing sleeve has two pistons inside, the spindle and bearing sleeve and the piston are provided with seals and seal compensation device, both ends of the inlet valve is connected with an end cap. The right end of the spindle is connected with a threaded sleeve and is connected with the drill pipe, and the side wall of the water inlet sleeve ...