| 简介 |
Useful model relates to gas and oil producing industry and can be used in fishing operations in oil, gas and geological exploration wells for gripping and further extraction of with wells, small metal objects. Tasks of creating utility model are : diffusion lu reliability of milling bit magnetic, and also efficiency of capture metal items and their removal from milling bit, after lifting from well. Decision mentioned problems is achieved due to the fact, that mill magnetic includes cylindrical steel housing with coupling connecting thread in upper part and central channel, connected with inclined channels, open on side surface of housing for passage of flushing liquid sti, milling crown and magnetic system characterized in that rotary crown is fixed to the body on the thread, between lower end of body and inner thrust end milling crown is secured circular insert, and magnets magnetic system are not uniformly along circumference milling crown. Inner surface milling crown is stepped, with increase of internal diameter of in the direction of the round insert. For magnetic system are used of permanent magnets from rare-earth metals. In inclined channels for passage of flushing liquid sti, are installed hydro manitornye of nozzle or bushing from solid alloy. As solid alloy for hydro manitornykh nozzle can be used volframokobaltovyi alloy. 1 with. u-T 2 cl, 4 zav. u content, with a, dwg 2. |
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