SU1348493A2 - Magnetic fishing device - Google Patents

Abstract

The invention relates to the mining industry and is intended for the removal of ferromagnetic objects (FN) that fall into the bottomhole when penetrating borehole complexes of shafts. The purpose of the invention is the efficiency of the device due to the control of the presence of the FP in the well. On the case (k) 1 a magnetic system is installed in the form of an elastic magnetic grid 2, along the perimeter of the cells 3 of which permanent magnets (PM) 4 are installed. With flexible bars 5, handle 6 is connected to K I. A node II of AF is located at the ends in the form of PM 12, mounted on handle 6 with the possibility of limited axial movement. In the upper part of the handle 6, the control unit for the presence of FP in the bore 7 is placed in the form of a spring-loaded 8 gate valve 9, the latter is connected by a flexible link 10 with the node I. The handle 6 is hollow and the lever 13 is installed in it to keep PM 12 from going down . When searching in the K 1 well, overcoming the rock resistance, interacts with the OP of the grid 2. In this case, the PM 4, which came into contact with the OP and the neighboring PM 4, are attracted to it, covering it from all sides. After that, the OP is raised to the surface. 2 Il. (J C Sl OS N her about:

Description

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The invention is from shsit to the mining industry, in particular to magnetic fishing tools for removing ferromagnetic objects that fall into the bottomhole when penetrating the trunk passage complexes of shafts.

The purpose of the invention is the efficiency of the device due to the control of the presence of ferromagnetic objects in the well.

FIG. 1 shows the device, general view; in fig. 2 - device node control the presence of ferromagnetic objects.

The magnetic latching device with a housing 1 with a magnetic system installed in it in the form of an elastic magnetic grid 2, along the perimeter of the cells 3 of which permanent magnets 4 are installed. The housing 1 is connected by a flexible pipe 5 to the handle 6. In the upper part of the handle 6 a node 7 is installed controlling the presence of ferromagnetic objects in the well in the form of spring-loaded with the help of springs 8, gate valve 9, which in turn is connected by a flexible coupling 10 to the node 11 of the location of ferromagnetic objects in the form of permanent magnets 12 mounted on handle 6 with a possible limited axial movement and located above the housing 1 of the magnetic system along its ends.

The handle 6 is made hollow and a spring-loaded lever 13 is installed inside it, which serves to keep the permanent magnets 12 from lowering under the action of its own weight and return them to their original position after the interaction of the node II with ferromagnetic objects ceases.

Magnetic catching device works as follows.

The device with the handle 6 is lowered into the face and a search is made. When the body 1 moves, which is communicated to it with the handle 6 and m 5, it overcomes the resistance of the rock and when it encounters a massive or irregular ferromagnetic object, an elastic magnetic grid interacts with them. 2. The magnets 4, located along the perimeter of each cell 3, are brought into contact with the object on

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Adjacent magnets 4, located adjacent to them, are also successively attracted to a ferromagnetic object due to their magnetic energies, and their close proximity to it by an elastic bond. Thus, the magnetic grid covers a completely ferromagnetic object and provides the realization of the magnetic force of attraction up to 250 - 300 I.

In case the ferromagnetic object is located on the side of the elastic magnetic grid 2, then the passage above it, the permanent magnets 2 are attracted to it and move downwards. Due to the presence of a corrugated rubber tube 14, the permanent magnets 12 are prevented from further movement. The movement of the permanent magnets 12 is transmitted through the flexible coupling 10 to the spring-loaded lever 13.

When a force is applied to a spring-loaded magnetic force lever, it turns down around the hinge and there is no spur lock 9 behind it, which, moving, releases a compressed spring 8. Unclenching, spring 8 makes a click on the transparent shaft 15 of box 16 and leads to it red mark 17. Upon receiving a signal, the operator searching for ferromagnetic objects shifts the magnetic grid 2 to the side and seizes the ferromagnetic object with it, after which the object is lifted to the surface.

Claims (1)

Invention Formula Magnetic fishing device according to auth. St. No. 1168698, characterized in that, for the purpose of device efficiency due to the control of the presence of ferromagnetic objects in the well, it is equipped with a node in the upper part of the handle that controls the presence of ferromagnetic objects in the well, made in the form of a spring-loaded gate valve and associated With a knot for locating ferromagnetic objects located above the body of the magnetic system along its ends and made in the form of separate magnets mounted on the handle with the possibility of limited axial movement beshcheni. Compiled by V. Rodina Editor A. Dolinich Tehred L. Serdyukova Proofreader A. Zimokosov 5173/31 Circulation 532 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4 (Put. 2