A medium box dismounting device special for vertical ring high gradient magnetic separator

Abstract

The present application belongs to the technical field of quartz sand sorting process and equipment, and particularly relates to a medium box dismounting device specially used for a vertical ring high gradient magnetic separator. The dismounting of the medium box of the magnetic separator completely depends on manual operation, which is complicated and inefficient, and the medium box is easily tilted, the nut is wrongly toothed or the mounting thread is damaged due to unstable clamping. The present application provides a medium box dismounting tool, which can tighten or loosen the fixing nut while clamping the medium box, thereby significantly improving the dismounting efficiency and safety. The dismounting device comprises a pair of clamping arms, the lower ends of the clamping arms are provided with clamping portions, and the medium box is arranged between the pair of oppositely arranged clamping portions of the pair of clamping arms to realize fixation. The present application can conveniently grasp, assemble and fix the magnetic medium box of the magnetic separator, reduces the subjective error probability of manual operation, saves time and effort, and is more convenient to take and operate in cooperation with a mechanical arm, can more labor-savingly align the assembly hole position, and more quickly rotates and tightens the nut.

Description

Technical Field

[0001] This invention belongs to the technical field of quartz sand separation process and equipment, specifically relating to a media box disassembly and assembly device for a vertical ring high gradient magnetic separator. Background Technology

[0002] Quartz sand is an important industrial mineral raw material, widely used in numerous industries such as glass, electronics, machinery casting, metallurgy, chemicals, cement, daily-use ceramics, refractory materials, superhard materials, functional fillers, and oil drilling. Silica sand classification primarily employs screening and hydraulic classification. Hydraulic classification of silica sand is currently the main screening method, and its production line includes steps such as raw sand collection, conveying, primary desliming and impurity removal, scrubbing, classification, magnetic separation, and concentration. This production line generally operates continuously.

[0003] A vertical ring high-gradient magnetic separator is a device that uses a high magnetic field generated by a cooled, low-temperature winding coil to wet-process weakly magnetic minerals. Its separation principle primarily utilizes the magnetic field generated by the winding coil to form a magnetic field loop through upper and lower magnetic yokes. A rotating ring with a magnetic medium is placed between the upper and lower magnetic yokes and the winding coil. The lower part of the rotating ring is immersed in the slurry. As the ring rotates, the magnetized medium adsorbs the magnetic particles of the minerals onto its surface. When the rotating ring pulls the magnetic medium immersed in the slurry out of the slurry and rotates a certain angle, pressurized water at the top of the rotating ring flushes the magnetic mineral particles into a concentrate collection device, thus achieving material separation.

[0004] Referring to Chinese patent documents: CN200820024592.0 - Forced Oil Cooling Vertical Ring High Gradient Magnetic Separator, CN201420218871.6 - A Insert-Type Magnetic Medium Box for a Vertical Ring High Gradient Magnetic Separator, the vertical ring high gradient magnetic separator mainly consists of a frame, rotating ring, upper magnetic pole, lower magnetic pole, cooler, flushing pipe, feed box, concentrate box, tailings box, excitation coil, drive device, pulsation device, flushing device, and control system. Several magnetic medium boxes are installed around the rotating ring, and the medium boxes are assembled and fixed to the rotating ring by bolts or other fasteners. During operation, the excitation coil generates a magnetic field after being energized. The magnetic medium boxes located in a portion of the rotating ring within the magnetic field generate a high-strength magnetic field due to magnetic field induction. The selected magnetic material continuously passes through the magnetic medium boxes in the induction zone, and the magnetic particles are adsorbed onto the magnetic medium inside the magnetic medium boxes. As the rotating ring continues to rotate, the magnetic particles are carried away from the magnetic induction zone and into the non-magnetic zone. The magnetic particles inside the magnetic medium box are then separated from the magnetic medium by the force of water or air, thus completing the sorting of the magnetic mineral materials. The magnetic medium box is mainly constructed using a welding method. Each of the two side plates of the magnetic medium box has several holes that match the magnetic medium rods. The magnetic medium rods pass through these holes, with both ends exposed outside the side plates. The end faces of the magnetic medium rods are then welded to the side plates one by one on the outer side plates.

[0005] The magnetic separator media box needs to be regularly maintained or replaced according to its operation and wear. Manual disassembly and assembly is time-consuming, labor-intensive, tedious, and repetitive, and is prone to unnecessary omissions, which can lead to abnormal operation of the magnetic separator and affect normal production.

[0006] Vertical ring high-gradient magnetic separators are core equipment for the wet separation of quartz sand and weakly magnetic minerals. Multiple replaceable magnetic media boxes are installed around the rotating ring. These media boxes are typically mounted on mounting bases on the rotating ring using nuts on both sides. During operation, the media boxes require periodic maintenance and replacement due to wear, blockage, or damage to the magnetic media bars. Currently, the assembly and disassembly of the media boxes rely entirely on manual labor: operators must hold the media box with one hand to prevent it from shaking or falling, while using a wrench to tighten or loosen multiple nuts one by one. This operation is cumbersome, inefficient, and prone to causing tilting of the media box, misalignment of the nuts, or damage to the mounting threads due to unstable clamping, or even causing the media box to fall and injure equipment or personnel. Therefore, there is an urgent need for a specialized tool that can simultaneously achieve media box clamping and positioning, as well as rapid tightening of the nuts. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned problems and provide a tool for disassembling and assembling the media box of a vertical ring high gradient magnetic separator. This tool can tighten or loosen its fixing nut while clamping the media box, enabling one-handed or two-handed operation, which significantly improves disassembly and assembly efficiency and safety.

[0008] The above objective is achieved by the following technical solution: A media box disassembly and assembly device specifically designed for vertical ring high gradient magnetic separators, characterized in that: The disassembly and assembly device includes a pair of clamping arms, with a base on the upper part of the clamping arms. The base is used to provide a basic framework for the clamping arms to realize functions such as assembly support and transmission connection. The clamping arms can move towards or away from each other on the base. The lower end of the clamping arm is provided with a clamping part, and the media box is placed between a pair of oppositely arranged clamping parts of the pair of clamping arms to achieve fixation; The media box has a lug on its side wall, which is used to be assembled onto the swivel ring by means of a nut; The clamping arm has a torsion mechanism on its outer wall facing outward. This torsion mechanism is used to rotate the fixing nuts on both sides of the media box.

[0009] The clamping part is provided with a slide rail, and a torsion mechanism is mounted on the slide rail. The torsion mechanism can move horizontally along the slide rail.

[0010] The rotary mechanism is equipped with a lifting mechanism, which enables the rotary mechanism to move vertically up and down relative to the clamping arm. For example... Figure 1-2 As shown,

[0011] The torsion mechanism is equipped with a motor.

[0012] The clamping part is provided with a hook plate and a pressure block is provided at the bottom edge of the clamping part. The hook plate and the pressure block form a clamping structure to achieve clamping and fixing of the side wall of the medium box.

[0013] The upper end of the hook plate is fixed to the clamping part, the middle part of the hook plate is curved outward and has elasticity, and the bottom of the hook plate is provided with a hook part.

[0014] The hook plate is equipped with a wedge-shaped guide rod, which is set on the outer wall of the hook plate. The wedge-shaped guide rod is movably connected to the outer wall of the hook plate through a guide rail or a sliding groove, and the wedge-shaped guide rod can move up and down along the outer wall of the hook plate.

[0015] The disassembly and assembly device is used on the robotic arm, and the base is provided with an assembly interface for assembly and connection with the robotic arm.

[0016] The beneficial effects of the present invention are as follows: The disassembly and assembly device designed in this invention can conveniently grasp, assemble and fix the magnetic media box of the magnetic separator, reduce the probability of subjective errors in manual operation, and save time and effort; furthermore, when the disassembly and assembly device is used in conjunction with a robotic arm, the picking operation is more convenient, the assembly holes can be aligned more easily, and the turning of the nut is also faster. Attached Figure Description

[0017] The following describes the accompanying drawings in this application: Figure 1 This is a schematic diagram of the overall structure of the magnetic separator in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the overall structure of the medium box in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the disassembly and assembly device and its assembly and fixation with the medium box in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the disassembly and assembly device and its assembly and fixation with another medium box in Embodiment 2 of this application; Figure 5 This is a schematic diagram of the disassembly and assembly device in Embodiment 3 of this application, which grabs the media box and assembles and fixes it. Figure 6 This is a physical image of the magnetic separator described in this application.

[0018] The reference numerals in the attached figures are as follows: 100 Magnetic separator, 11 Frame, 12 Rotary ring, 13 Medium box, 131 Hanging lug, 14 Cooler, 15 Drive unit, 16 Flushing pipe, 17 Feed box, 18 Concentrate box, 19 Magnetic pole; 200 disassembly and assembly device; 21 Clamping arm, 22 Clamping part, 221 Slide rail, 222 Hook plate, 223 Pressure block, 224 Hook part, 225 Wedge guide rod; 23 Base; 231 Assembly interface; 24 Twist mechanism; 25 Fixing nut; 300 robotic arms. Detailed Implementation

[0019] Example 1

[0020] like Figure 1-3 As shown, Figure 1 A simplified structural diagram of a magnetic separator is provided. As shown in the diagram, the magnetic separator mainly consists of a frame, rotating ring, upper magnetic poles, lower magnetic poles, a cooler, a flushing pipe, a feed box, a concentrate box, a tailings box, an excitation coil, a drive unit, a pulsation device, a flushing device, and a control system. The rotating ring and the magnetic poles formed by the upper and lower magnetic poles are the core components of the magnetic separator. Several magnetic media boxes are installed around the rotating ring, such as... Figure 2 As shown, the media box is assembled and fixed to the rotating ring using fasteners such as bolts. For details regarding the structure, connections between components, and functionality of the magnetic separator, please refer to the prior art documents described in the background section; further details are omitted here. When the mortar flows through the media box on the rotating ring, magnetic materials are adsorbed onto the media box, while non-magnetic materials pass through the media box and flow into the tailings (in the application scenario described in this application, the tailings are actually the concentrate to be obtained from silica sand beneficiation; the magnetic materials are the tailings). This achieves the purpose of removing iron and other magnetic components from the mortar using a magnetic separator.

[0021] like Figure 3 As shown in this embodiment, a media box assembly / disassembly device specifically designed for a vertical ring high-gradient magnetic separator is described. This device includes a pair of clamping arms, each with a base at its upper part. The base provides the basic framework for assembly support and transmission connections for the clamping arms. The clamping arms can move relative to each other on the base. The clamping arms clamp the media box by moving relative to each other; specifically, the upper ends of the clamping arms are assembled within the base, which contains a movable mechanism driven by gears, push rods, cranks, etc., and equipped with guide rails. The clamping arms can move relative to each other within this movable mechanism to clamp or release the media box.

[0022] The lower end of the clamping arm is provided with a clamping part, and the media box is placed between a pair of opposing clamping parts of the pair of clamping arms to achieve fixation. Furthermore, the inner arm of the clamping part can be provided with anti-slip structures such as a rubber layer, protrusions, and rough surfaces to enhance the clamping and fixing effect.

[0023] A torsion mechanism is provided on the outer wall of the clamping arm facing outward. This torsion mechanism is used to correspond to and rotate the fixing nuts on both sides of the media cartridge. Figure 1-2As shown in Figure 6, after the media boxes are assembled onto the rotating ring of the magnetic separator, the gap between adjacent media boxes is very small, making it very inconvenient to pick up and remove the nuts during assembly. Therefore, the disassembly and assembly device developed in this application can effectively solve this technical problem. An electric torque wrench can be easily implemented using existing technology.

[0024] Electric torque wrenches are a general term referring to power tools that use electricity or batteries to set and control torque for precise tightening of bolts. These tools offer significant advantages in ensuring assembly accuracy and reducing labor intensity. Most "electric wrenches" commonly found on the market are impact wrenches, which have poor torque accuracy and are only used for quick assembly and disassembly. Classified by internal structure and operating principle, electric torque wrenches include: .

[0025] Based on their shape and transmission method, electric torque wrenches are mainly divided into the following four types: Pistol type: Comfortable to hold, suitable for most conventional occasions. Angle / bend type: The head is at a 90-degree angle, allowing operation in confined spaces. Straight handle type: Slender body, suitable for working in narrow spaces. Hydraulic type: Driven by a hydraulic pump, it provides non-impact, flexible loading and can stably output thousands or even tens of thousands of Newton-meters of torque, used in ultra-high torque scenarios such as heavy-duty assembly of wind turbine tower flange bolts.

[0026] The clamping part is equipped with a slide rail, and a rotating mechanism is mounted on the slide rail, which can move horizontally along the slide rail. The rotating mechanism is equipped with a lifting mechanism, which enables the rotating mechanism to move vertically up and down relative to the clamping arm. The rotating mechanism is equipped with a motor. When the media box is clamped and fixed by the disassembly and assembly device and assembled into the corresponding position in the rotating ring, so that the fixing bolt on the rotating ring is aligned with the fixing nut on the media box, the rotating mechanism can then be moved to the corresponding nut position, the nut can be tightened, and it can be continuously rotated downwards to achieve a secure fit. Conversely, the operating principle for disassembling the media box is the same, and will not be described again.

[0027] Example 2

[0028] like Figure 4As shown, based on the above embodiments, the clamping part in this embodiment does not grip the media box by horizontal clamping. When the fixing nut is set on the upper edge of the media box, the clamping part cannot extend downward to the side of the media box to achieve clamping. Therefore, this embodiment provides a hook plate on the clamping part, and a pressure block is provided on the bottom edge of the clamping part. The hook plate and the pressure block form a clamping structure to achieve clamping and fixing of the side wall of the media box. Specifically, the clamping part is provided with a hook plate, and a pressure block is provided on the bottom edge of the clamping part. The hook plate and the pressure block form a clamping structure to achieve clamping and fixing of the side wall of the media box. The upper end of the hook plate is fixed on the clamping part, the middle part of the hook plate is outwardly curved and elastic, and the bottom of the hook plate is provided with a hook. First, the hook plate is inserted through the gap between the media into the lower edge of the media box side wall, and its lower hook portion is firmly hooked onto the lower edge of the media box side wall. Then, the pressure block at the lower end of the clamping part is moved downward to the upper edge of the media box side wall. The clamping structure formed by the hook plate and the pressure block clamps and fixes the media box to the side wall. Subsequently, the translation and rotation mechanism is used to tighten the fixing nut on the media box. The principle is the same as in the above embodiment and will not be repeated.

[0029] To facilitate the clamping structure's detachment from the media box, or when the hook plate extends into the side wall of the media box and the hook portion needs to be hooked onto the side wall, the outwardly bent and elastically designed front end of the hook plate will not automatically approach the side wall and achieve hooking. Therefore, the hook plate in this embodiment is equipped with a wedge-shaped guide rod. This wedge-shaped guide rod is set on the outer side wall of the hook plate, and the wedge-shaped guide rod is movably connected to the outer side wall of the hook plate through a guide rail or a sliding groove. The wedge-shaped guide rod can move up and down along the outer side wall of the hook plate. The wedge-shaped guide rod is used to press the front end of the hook plate closer to the lower edge of the media box to achieve hooking.

[0030] Example 3

[0031] like Figure 1 , 5 As shown, based on the above embodiments, the disassembly and assembly device described in this embodiment is assembled and used on a robotic arm, and the base is provided with an assembly interface for assembly and connection with the robotic arm.

[0032] The disassembly / assembly device provided in this embodiment is assembled onto an industrial robotic arm. This robotic arm employs a six-axis articulated structure, with each joint driven by a servo motor and a high-precision reducer. It also incorporates an absolute encoder and torque sensor, enabling flexible movement in six degrees of freedom within space. The end effector of the robotic arm is equipped with a vision guidance system and a force control module, allowing it to autonomously position itself to the media box mounting position on the rotating ring of a vertical ring high-gradient magnetic separator according to a preset program, and to sense contact force in real time to prevent collision damage. The disassembly / assembly device has a base with an integrated assembly interface that matches the end effector of the robotic arm. This assembly interface uses a modular quick-change structure, with one side being a connecting plate fixed to the flange at the end effector of the robotic arm, and the other side being an adapter plate locked to the base of the disassembly / assembly device. The interface also integrates self-sealing quick-connect fittings for both pneumatic and electrical circuits. Once the robotic arm moves the disassembly / assembly device to the working position, the device can be quickly mounted and automatically supplied with air and power via the positioning pins and locking cylinders within the interface.

[0033] Furthermore, when the disassembly / assembly device is equipped with a control system to achieve fully automatic or semi-automatic operation, in terms of operating principle, the control system of the robotic arm and the controller inside the disassembly / assembly device communicate in real time via a fieldbus. The robotic arm is responsible for large-range movement and coarse positioning, while the disassembly / assembly device is responsible for the fine operation of the media box (including clamping and nut tightening). In specific operation, the robotic arm first plans its motion trajectory based on the three-dimensional coordinates of the media box mounting base fed back by the vision system, and delivers the disassembly / assembly device to the work station. At this time, the clamping and tightening components of the disassembly / assembly device have been aligned with the side plate of the media box and the fixing nut with the assistance of the robotic arm. While maintaining the stability of the end-effector posture, the robotic arm can apply a small feed force along the nut axis to cooperate with the disassembly / assembly device to complete the insertion and unscrewing of the nut. Throughout the process, the robotic arm is equivalent to the moving platform and attitude adjuster of the disassembly / assembly device. Its high repeatability positioning accuracy ensures that the disassembly / assembly device can be accurately aligned every time, while the compliant force control function of the robotic arm can avoid thread damage caused by rigid alignment deviation.

[0034] Furthermore, the robotic arm can carry a disassembly and assembly device to sequentially traverse multiple media box installation positions on the rotating ring, enabling fully automated, unattended batch replacement of media boxes. By changing different assembly interface adapter plates, the same robotic arm can also quickly interface with other maintenance tools, further enhancing the flexibility and intelligence of magnetic separator maintenance operations.

[0035] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A media box disassembly and assembly device specifically for vertical ring high gradient magnetic separators, characterized in that: The disassembly and assembly device includes a pair of clamping arms, with a base on the upper part of the clamping arms. The base is used to provide a basic framework for the clamping arms to realize functions such as assembly support and transmission connection. The clamping arms can move towards or away from each other on the base. The lower end of the clamping arm is provided with a clamping part, and the media box is placed between a pair of oppositely arranged clamping parts of the pair of clamping arms to achieve fixation; The media box has a lug on its side wall, which is used to be assembled onto the swivel ring by means of a nut; The outer wall of the clamping arm facing outward is provided with a torsion mechanism, which is used to correspond to the fixing nuts on both sides of the medium box and to rotate the fixing nuts.

2. The media box disassembly and assembly device for a vertical ring high gradient magnetic separator according to claim 1, characterized in that: The clamping part is provided with a slide rail, and a torsion mechanism is mounted on the slide rail. The torsion mechanism can move horizontally along the slide rail.

3. The media box disassembly and assembly device for a vertical ring high gradient magnetic separator according to claim 1, characterized in that: The rotary mechanism is equipped with a lifting mechanism, which enables the rotary mechanism to move vertically up and down relative to the clamping arm.

4. The media box disassembly and assembly device for a vertical ring high gradient magnetic separator according to claim 3, characterized in that: The rotary mechanism is equipped with a motor.

5. A media box disassembly and assembly device specifically for a vertical ring high gradient magnetic separator according to claim 1, characterized in that: The clamping part is provided with a hook plate and a pressure block is provided at the bottom edge of the clamping part. The hook plate and the pressure block form a clamping structure to achieve clamping and fixing of the side wall of the medium box.

6. A media box disassembly and assembly device specifically for a vertical ring high gradient magnetic separator according to claim 5, characterized in that: The upper end of the hook plate is fixed to the clamping part, the middle part of the hook plate is curved outward and has elasticity, and the bottom of the hook plate is provided with a hook part.

7. A media box disassembly and assembly device specifically for a vertical ring high gradient magnetic separator according to claim 5 or 6, characterized in that: The hook plate is equipped with a wedge-shaped guide rod, which is set on the outer wall of the hook plate. The wedge-shaped guide rod is movably connected to the outer wall of the hook plate through a guide rail or a sliding groove, and the wedge-shaped guide rod can move up and down along the outer wall of the hook plate.

8. A media box disassembly and assembly device specifically for a vertical ring high gradient magnetic separator according to any one of claims 1-6, characterized in that: The disassembly and assembly device is used on the robotic arm, and the base is provided with an assembly interface for assembly and connection with the robotic arm.

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