A strong magnetic machine with a through screw
By setting a locking section on the through screw of the strong magnet machine and using a wrench to clamp the rotating rod, the problem of through screw slippage is solved, enabling faster and more labor-saving installation and disassembly, and improving the operational stability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-23
AI Technical Summary
The through-bolts of existing magnetic separators are prone to slippage during installation and disassembly, causing inconvenience to operation and posing safety hazards, thus affecting the stable operation of the equipment.
Design a through screw for a strong magnet, with a locking section on the rod body. The cross-section of the locking section is a regular hexagon or square. The locking section is rotated by clamping it with a wrench to achieve thread screwing in and out, avoiding slippage.
It improves the efficiency of installing and removing through screws, reduces operation time and labor intensity, enhances the screw's firmness, and reduces the risk of equipment failure.
Smart Images

Figure CN224396884U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of strong magnet technology and relates to a through screw for a strong magnet. Background Technology
[0002] The ZH-3200 magnetic separator has two rotating discs, upper and lower. Adjacent stainless steel partitions form a group of sorting boxes, with 27 groups on each disc. Sorting tooth plates are installed within each sorting box and secured to the disc using six T-bolts and mounting caps. The 27 sorting boxes rotate with the discs. When the disc enters the magnetic pole head, the medium is intensely magnetized. Above the feed nozzle within the magnetic field separation zone, the slurry enters the toothed box for separation. During operation, the ZH series wet high-intensity magnetic separator experiences issues due to the strong magnetic field. Over long-term continuous operation, the through-bolts on the upper and lower discs may loosen, as may the toothed plate cap screws and the toothed plates shake. This can easily lead to broken through-bolts, potentially causing toothed plates to fall off and resulting in serious equipment accidents, damaging other auxiliary facilities within the disc. Falling toothed plates cause significant damage to the equipment, require substantial maintenance, and have a long repair period, impacting stable operation.
[0003] Tightening through bolts is a key part of daily maintenance. A 200 mm pipe wrench is commonly used to tighten or loosen through bolts. However, because through bolts are cylindrical and the workspace is limited, the 200 mm pipe wrench is prone to slipping when tightening or loosening them, presenting a problem. Utility Model Content
[0004] The purpose of this invention is to address the problem that existing magnetic separator through-screws are prone to slippage and are inconvenient to operate when used with pipe wrenches during installation and disassembly, and to provide a through-screw for strong magnetic separators.
[0005] Therefore, the present invention adopts the following technical solution:
[0006] A through-hole screw for a strong magnet includes a rod body, one end of which is provided with a first thread and the other end with a second thread. A locking section is provided in the middle of the rod body, and the cross-section of the locking section is a regular hexagon or a square structure.
[0007] Furthermore, the rod is a cylinder.
[0008] Furthermore, the locking section is internally connected to the cylinder containing the rod.
[0009] Furthermore, the diameter of the second thread is the same as the diameter of the rod.
[0010] Furthermore, the locking section is located near the second thread.
[0011] Furthermore, the first screw and the second screw have opposite directions of rotation.
[0012] The advantages of this utility model are as follows: a locking section with a hexagonal or square structure is set on the rod body, and the rod body can be rotated by holding the locking section with a wrench to complete the screw-in installation or screw-out disassembly. During the installation and disassembly process, the locking section is rotated by holding it with a wrench, which is not easy to slip, saving time and effort; the structure is simple and the processing cost is low. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] In the diagram, 1-rod body, 2-second thread, 3-second thread, 4-locking section. Detailed Implementation
[0015] The present invention will now be described in detail with reference to the accompanying drawings:
[0016] like Figure 1 As shown, a through-hole screw for a strong magnetic separator includes a cylindrical rod 1. One end of the rod 1 has a first thread 2, and the other end has a second thread 3. The first thread 2 and the second thread 3 have opposite directions of rotation. The diameter of the first thread 2 is 30mm, and the diameter of the second thread 3 is 24mm. The diameter of the rod 1 is 24mm, and the diameter of the second thread 3 is the same as the diameter of the rod 1. In use, the first thread 2 of the rod 1 is installed on the turntable of the strong magnetic separator. Specifically, the turntable has corresponding screw holes, and the first thread 2 is installed into the corresponding screw holes. Then, a stainless steel spacer block is placed on the rod 1 (the stainless steel spacer block has a through hole, through which the rod 1 passes). Finally, the nut is installed on the second thread 3. Because the first thread 2 and the second thread 3 have opposite directions of rotation... The two threads 3 have opposite directions of rotation, which can prevent the rod body 1 from being subjected to external force when installing the nut, causing the first thread 2 to unscrew from the threaded hole. A locking section 4 is formed in the middle of the rod body 1. The cross-section of the locking section 4 is a regular hexagon or square structure. In this embodiment, it is a regular hexagon structure. The locking section 4 makes it easy to use an adjustable wrench. When installing and removing the rod body 1, it is less likely to slip compared to a pipe wrench, which is convenient, quick and saves time and effort. The locking section 4 is connected inside the cylinder where the rod body 1 is located. If the locking section 4 is set too small, it will affect the strength of the rod body 1, making the rod body 1 easy to break at the position of the locking section 4. If the locking section 4 is set too large, it will cause interference when installing the stainless steel spacer block, affecting the installation of the stainless steel spacer block. In addition, the locking section 4 is located near the second thread 3.
[0017] The method of using this utility model is as follows:
[0018] When installing the stainless steel spacer block, first install the first thread 2 of the rod body 1 into the corresponding screw hole of the strong magnetic separator turntable. When turning, a wrench can be used to clamp the locking section 4. By turning the rod body 1 with the wrench, the first thread 2 is screwed into the screw hole. Compared with pipe wrenches, the wrench makes this process more convenient and faster, and makes the installation of the first thread 2 more secure. After the rod body 1 is installed, the stainless steel spacer block can be put on the rod body 1, and then the nut can be installed on the second thread 3. When the rod body 1 needs to be disassembled after a period of use, the nut is removed first, then the stainless steel spacer block is removed, and finally the wrench is clamped on the locking section 4. By turning the handle of the rod body 1, the first thread 2 can be screwed out of the screw hole.
[0019] With this through-hole screw, the rod 1 can be turned with a wrench to complete the installation of the first thread 2. The installation and disassembly process is less prone to slippage, the installation effect is good, and the disassembly is more convenient.
Claims
1. A through screw for a strong magnet, characterized in that, The rod (1) includes a first thread (2) at one end and a second thread (3) at the other end. The rod (1) has a locking section (4) in the middle, and the cross-section of the locking section (4) is a regular hexagon or a square structure.
2. The through screw for a strong magnet as described in claim 1, characterized in that, The rod (1) is a cylinder.
3. The through screw for a strong magnet as described in claim 2, characterized in that, The locking section (4) is connected inside the cylinder containing the rod (1).
4. A through-hole screw for a strong magnet as described in claim 2, characterized in that, The diameters of the first thread (2) and the second thread (3) are the same as the diameter of the rod (1).
5. A through-hole screw for a strong magnet as described in claim 1, characterized in that, The locking section (4) is located near the second thread (3).
6. A through-hole screw for a strong magnet as described in claim 1, characterized in that, The first screw and the second thread (3) have opposite directions of rotation.