The power head of the utility model is composed of a sealing device, bolt, bracket, grouting pipe, casing and joint, and the lower end of the bracket body is fixed by the bolt, and the lower end of the upper joint grouting pipe and connected with the bracket by bolts is fixed in the casing pipe grouting. In the casing from top to bottom is opened on the seal cavity, seal chamber and seal cavity, seal cavity and seal chamber for the annular cavity, under the section of the seal cavity is funnel-shaped, on one end of the seal cavity and the sealing cavity for the cup, the other end is provided with a plug hole, under the seal cavity the lower end is cup, upper end is provided with a plug hole. The utility model has the power head sealing device, the sealing cavity between the multiple sealing ring, when the high-pressure oil gun oil cup into the sealed cavity into the sealing medium, through the plug hole in the plug tightening and relaxation can control the sealing medium, not only reduces the abrasion of the sealing element and the grouting pipe, the service life of the equipment comparison of the original equipment is improved by 15-20 times.
【技術實現步驟摘要】
【技術保護點】
1.動力頭密封裝置,是由螺栓、支架、注漿管、套管和接頭構成,支架(1)的下端與機體用螺栓(2)固定,接頭(3)的下端與注漿管(4)相連接并與支架(1)的上端用螺栓(5)固定,注漿管(4)套于套管(6)內,其特征是在套管(6)內從上至下依次開有上密封腔(7)、中密封腔(8)和下密封腔(9),上密封腔(7)和中密封腔(8)為環形腔體,下密封腔(9)的截面為漏斗形,上密封腔(7)和中密封腔(8)的一端為油杯(10),另一端開有螺塞孔(11),下密封腔(9)下部一端為油杯(10)、上部一端開有螺塞孔(11),在套管(6)上各密封腔體間均設有密封環(12)與注漿管(4)相密封。
【技術特征摘要】
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