Novel magnetic fisher

Abstract

The utility model discloses a novel magnetic fisher, which comprises an upper joint and a lower joint, the upper joint is connected with the lower joint, the front end of the lower joint is provided with a central through hole and two rows of through holes uniformly distributed along the central through hole, the outer row is a third runner hole, a main magnet is arranged in the central through hole, and an auxiliary magnet is arranged in the inner row of through holes. A first flow channel hole is formed in the upper connector, the check block is fixedly installed in the lower connector and provided with a second flow channel hole, and the second flow channel hole is connected with the first flow channel hole and the third flow channel hole. By arranging the auxiliary magnets around the main magnet, the main magnet and the auxiliary magnets have different magnetic poles at the end parts on the same side during installation, so that magnetic lines can be quickly closed, and the attraction force of the end surface magnets is effectively increased.

Description

Technical Field

[0001] The utility model relates to the technical field of salvaging fallen objects in well repair construction operations, in particular to a novel magnetic salvage device. Background Art

[0002] During drilling operations, the problem of falling objects often occurs. For example, wrenches, bolts, and pliers teeth fall from the wellhead into the well, causing small objects to fall from the bottom of the well. Wear of the cone drill bit causes the cone and teeth to fall off, and metal debris is generated by milling. These loose small objects must be cleaned up promptly, otherwise they will affect normal drilling. Conventional magnetic salvage devices mainly rely on a complete permanent magnet to magnetize and attract fallen objects. The magnets are large in size and costly. The N and S grades of the magnets are far apart, resulting in a large closure of magnetic lines of force, which affects the suction effect and insufficient magnetic force to attract and salvage fallen objects from the bottom of the well. During installation, the magnets are often damaged by direct collision with the upper joint due to magnetic attraction. Broken fragments often splash and can easily cause finger injuries, posing a risk of injury to installers. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides a new type of magnetic salvage device, the purpose of which is to enhance the suction force of the magnet, reduce the risk of magnet installation, and achieve the effect of efficiently salvaging fallen objects.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a new magnetic salvage device, including an upper joint and a lower joint, the upper joint is connected to the lower joint, the front end of the lower joint is provided with a central through hole and two rows of through holes evenly distributed along the central through hole, of which the outer row is the third flow channel hole, the main magnet is installed in the central through hole, and the auxiliary magnet is installed in the inner row of through holes, the upper joint is provided with a first flow channel hole, the block is fixedly installed inside the lower joint and is provided with a second flow channel hole, and the second flow channel hole is respectively connected to the first flow channel hole and the third flow channel hole.

[0005] The inner row of through holes and the central through hole are both provided with inner circular steps

[0006] A protective cover is sleeved on the main magnet and the auxiliary magnet, one end of the protective cover abuts against the inner circle step, and the other end abuts against the stop block.

[0007] The protective cover is made of non-magnetic material.

[0008] The first flow channel holes are symmetrically arranged along the central axis of the upper joint.

[0009] The diameter of the main magnet is larger than the diameter of the auxiliary magnet.

[0010] The lower connector and the stopper are made of non-magnetic materials.

[0011] Beneficial effects of the utility model:

[0012] 1. By setting auxiliary magnets around the main magnet, the magnetic poles of the main magnet and the auxiliary magnet on the same side are different during installation, so that the magnetic lines of force can be quickly closed, effectively increasing the suction force of the end magnet.

[0013] 2. By setting the lower joint, block and protective cover to non-magnetic materials, the magnetic force is effectively concentrated in the direction of attracting fallen objects, increasing the success rate of salvage, while avoiding impact damage and injury accidents caused by the magnet during assembly.

[0014] 3. By designing the first flow channel holes to be symmetrically arranged along the central axis of the upper joint, the mud flows straight in the first flow channel holes, making the flow smoother, facilitating mechanical processing and reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the structural cross section of the utility model;

[0017] Figure 2 This is a schematic diagram of the end face of the magnet of the present invention;

[0018] In the figure: 1. Upper joint; 2. Lower joint; 3. Third flow channel hole; 4. Main magnet; 5. Auxiliary magnet; 6. First flow channel hole; 7. Stop block; 8. Second flow channel hole; 9. Protective cover. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0020] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments. Example

[0021] The utility model provides a novel magnetic salvage device, comprising an upper joint 1 and a lower joint 2. The upper joint 1 is connected to the lower joint 2, specifically by a threaded connection. The front end of the lower joint 2 is provided with a central through hole and two rows of through holes evenly distributed along the central through hole, of which the outer row is a third flow channel hole 3. A main magnet 4 is mounted in the central through hole, and an auxiliary magnet 5 is mounted in the inner row of through holes. The upper joint 1 is provided with a first flow channel hole 6. A block 7 is fixedly mounted inside the lower joint 2 and provided with a second flow channel hole 8. The second flow channel hole 8 is respectively connected to the first flow channel hole 6 and the third flow channel hole 3. The diameter of the main magnet 4 is larger than that of the auxiliary magnet 5.

[0022] By arranging the auxiliary magnet 5 around the main magnet 4, the main magnet 4 and the auxiliary magnet 5 have different magnetic poles on the same side of the end during installation, so that the magnetic lines of force can be quickly closed, effectively increasing the end face magnet attraction.

[0023] Specifically, in order to protect the magnets from damage and facilitate installation, the inner row of through holes and the central through hole are both provided with inner circular steps, and a protective cover 9 is provided on the main magnet 4 and the auxiliary magnet 5. One end of the protective cover 9 abuts the inner circular step, and the other end abuts the block 7. The protective cover 9 is made of non-magnetic material. Since the protective cover 9 is made of non-magnetic material, it can effectively avoid impact damage and injury accidents of the magnets during assembly.

[0024] Specifically, the first flow channel holes 6 are symmetrically arranged along the central axis of the upper joint 1, and the slurry flows straightly in the first flow channel holes 6, which makes the flow smoother, facilitates mechanical processing, and reduces processing costs.

[0025] Specifically, in order to further reduce the probability of damage and personal injury caused by impact of the magnet during assembly, the lower connector 2 and the stopper 7 are made of non-magnetic materials.

[0026] In addition to the above-mentioned preferred embodiments, the present invention has other implementation methods. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A novel magnetic salvage device, comprising an upper joint (1) and a lower joint (2), wherein the upper joint (1) and the lower joint (2) are threadedly connected, characterized in that: The front end of the lower joint (2) is provided with a central through hole and two rows of through holes evenly distributed along the central through hole, wherein the outer row is a third flow channel hole (3), the main magnet (4) is installed in the central through hole, and the auxiliary magnet (5) is installed in the inner row of through holes, the upper joint (1) is provided with a first flow channel hole (6), the stopper (7) is fixedly installed inside the lower joint (2) and is provided with a second flow channel hole (8), and the second flow channel hole (8) is respectively connected to the first flow channel hole (6) and the third flow channel hole (3).

2. A novel magnetic salvage device according to claim 1, characterized in that: The inner row of through holes and the central through hole are both provided with inner circular steps.

3. A novel magnetic salvage device according to claim 1, characterized in that: A protective cover (9) is sleeved on the main magnet (4) and the auxiliary magnet (5), with one end of the protective cover (9) abutting against the inner circular step and the other end abutting against the stopper (7).

4. A novel magnetic salvage device according to claim 3, characterized in that: The protective cover (9) is made of a non-magnetic material.

5. The novel magnetic salvage device according to claim 1, characterized in that: The first flow channel holes (6) are symmetrically arranged along the central axis of the upper joint (1).

6. A novel magnetic salvage device according to claim 1, characterized in that: The diameter of the main magnet (4) is greater than the diameter of the auxiliary magnet (5).

7. A novel magnetic salvage device according to claim 1, characterized in that: The lower connector (2) and the stopper (7) are made of non-magnetic materials.

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