Device and method for measuring ore discharge gap of magnetic separator

Abstract

The invention relates to the technical field of magnetic separator measurement, in particular to a device and a method for measuring an ore discharge gap of a magnetic separator. The invention provides a magnetic separator ore discharge gap measuring device, which comprises a measuring rod and a hook, the middle part of the measuring rod is provided with an abdicating part, the abdicating part is used for accommodating a transmission shaft of a roller when the measuring rod is placed along the central axis of the roller of a magnetic separator, the hook is arranged at the end part of the measuring rod, and the hook is arranged on the measuring rod. The measuring rod and the hook are arranged in a right-angle mode, and the hook is used for hooking the bottom of the roller. The device is simple in structure, convenient to use and accurate in measurement, an operator can quickly measure the ore discharge gap of the magnetic separator without disassembling and assembling the magnetic separator through hoisting equipment such as a crown block, the difficulty in ore pulp cleaning and the injury risk of workers are avoided, and the working efficiency and the safety coefficient are greatly improved.

Description

Technical Field

[0001] The present disclosure relates to the field of magnetic separator measurement technology, and in particular to a device and method for measuring the discharge gap of a magnetic separator. Background Art

[0002] Drum magnetic separators are widely used in mineral processing, primarily for separating minerals with varying magnetic properties. They separate minerals primarily through the action of a magnetic field. Their operating principle is that after slurry flows from the feed box into the trough, the water flow loosens the mineral particles and draws them into the separation area. Under the influence of the magnetic field, magnetic particles form "magnetic clusters" or "magnetic chains" and are attracted to the surface of the rotating drum. Non-magnetic or weakly magnetic minerals are discharged from the slurry with the water flow, forming tailings. Magnetic minerals adsorbed on the drum surface rotate with the drum to the edge of the magnetic system, where they are discharged into the concentrate tank by flushing water or brush rollers. Drum magnetic separators are widely used in the steel, coal, non-metallic minerals, and building materials industries.

[0003] Currently, there are two main methods for measuring the discharge gap of magnetic separators: one is the plasticine measurement method, which is a traditional and commonly used method and is suitable for situations where the discharge gap needs to be accurately measured. The specific operation is as follows: first, place a piece of plasticine on each end of the bottom plate of the trough; second, install the magnetic drum and compact the plasticine, then lift it off the magnetic drum; finally, measure the thickness of the plasticine after being flattened, which is the accurate value of the discharge gap. The second is the rough measurement method. When the gap needs to be quickly understood during the production process, the following method can be used: open the ore discharge holes at both ends of the magnetic separator trough, clean and flush the material, and then the operator reaches in to touch the gap to obtain a rough value of the gap. The above two methods either require at least two people and the cooperation of an overhead crane, which is time-consuming and labor-intensive, or have low accuracy and pose certain safety risks.

[0004] Therefore, there is an urgent need to develop a new type of discharge gap measurement tool that can be used by a single person to measure the discharge gap safely and quickly while ensuring measurement accuracy. Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, in a first aspect of the present disclosure, a device for measuring the discharge gap of a magnetic separator is provided, comprising a measuring rod and a hook, wherein a middle portion of the measuring rod is provided with a yield portion, and the yield portion is used to accommodate the transmission shaft of the drum when the measuring rod is placed along the central axis of the drum of the magnetic separator, wherein the hook is provided at the end of the measuring rod, the measuring rod is provided at a right angle to the hook, and the hook is used to hook the bottom of the drum.

[0007] In a feasible embodiment, a scale is provided on the side of the measuring rod opposite to the hook.

[0008] In a feasible embodiment, a limiter is further included, the hook is rotatably connected to the measuring rod, the limiter is connected to the measuring rod and / or the hook, and the limiter is used to limit the rotation of the hook relative to the measuring rod.

[0009] In a feasible embodiment, the measuring rod includes a first rod body and a second rod body, the first rod body is slidably connected to the second rod body, and a scale is provided on the second rod body, wherein:

[0010] The first rod and the second rod are both provided with a semicircular giving portion, and the difference between the semicircular diameter of the giving portion of the first rod and the semicircular diameter of the giving portion of the second rod is the measuring range of the scale.

[0011] In a feasible embodiment, the hook is provided on the first rod, and a scale indicator mark is provided on the first rod, and the scale indicator mark is within the reading range of the scale within the measuring range of the first rod and the second rod.

[0012] In a feasible embodiment, the lengths of the rod portion of the first rod body provided with the scale indicator mark and the rod portion of the second rod body provided with the scale are adjustable.

[0013] In a feasible embodiment, the diameters of the evacuation portions of the first rod body and the second rod body are adjustable.

[0014] In a feasible embodiment, the measuring rod is configured as a telescopic rod.

[0015] In a feasible embodiment, the hook is detachably connected to the measuring rod.

[0016] In a second aspect of the present disclosure, a method for measuring the discharge gap of a magnetic separator is provided, which is applied to the above-mentioned device for measuring the discharge gap of the magnetic separator, comprising:

[0017] Insert the measuring rod through the side of the magnetic separator drum into the bottom of the magnetic separator tank, make the hook contact the bottom of the tank, and adjust the measuring rod to overlap with the central axis of the drum;

[0018] Measure the length L1 of the measuring rod extending beyond the top of the drum;

[0019] Lift the measuring rod vertically upward along the wall of the drum until the hook hooks the bottom of the drum;

[0020] Measure again the length L2 of the measuring rod extending beyond the top of the drum;

[0021] The difference between L2 and L1 is the discharge gap of the magnetic separator.

[0022] Compared with the prior art, the present disclosure has at least the following beneficial effects: the yield portion of the measuring rod of the present disclosure can avoid the transmission shaft during the measurement process, so that the measuring rod can overlap with the central axis of the measuring side of the roller, and plays a positioning role for the measuring rod. The present disclosure has a simple structure, is easy to use, and has accurate measurement. The operator can quickly measure the discharge gap of the magnetic separator without the need for overhead cranes or other lifting equipment to disassemble and assemble the magnetic separator, avoiding the difficult operation and injury risk of workers in cleaning the slurry, and greatly improving work efficiency and safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the exemplary embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered limiting of the present application. Throughout the accompanying drawings, the same reference symbols denote the same components. In the accompanying drawings:

[0026] Figure 1 It is a front view structural schematic diagram of the present disclosure;

[0027] Figure 2 This is a schematic front view of the structure of the first rod body and the second rod body disclosed in the present invention;

[0028] Figure 3 It is a side view structural schematic diagram of the present disclosure.

[0029] in, Figures 1 to 3 The corresponding relationship between the reference numerals and component names is as follows:

[0030] 100- roller; 101- transmission shaft;

[0031] 1-measuring rod; 11-yielding portion; 12-first rod body; 13-second rod body; 2-hook; 3-scale; 4-scale indicator mark. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0034] At present, there are two main methods commonly used to measure the discharge gap of magnetic separators: one is the plasticine measurement method, which is a traditional and commonly used method and is suitable for situations where the discharge gap needs to be accurately measured. The specific operation is as follows: first, place a piece of plasticine on each end of the bottom plate of the trough; second, install the magnetic drum and compact the plasticine, and then lift it off the magnetic drum; finally, measure the thickness of the plasticine after being flattened. This thickness is the accurate value of the discharge gap. The second is the rough measurement method. When the gap needs to be quickly understood during the production process, the following method can be used: open the discharge holes at both ends of the magnetic separator trough, clean and flush the material, and then the operator reaches in to touch the gap to obtain a rough value of the gap. The above two methods either require at least two people and the cooperation of an overhead crane, which is time-consuming and labor-intensive, or have low accuracy and pose certain safety hazards.

[0035] Based on this, an embodiment of the present disclosure provides a device for measuring the discharge gap of a magnetic separator. During the measurement process, the yielding portion of the measuring rod of the present disclosure can avoid the transmission shaft, so that the measuring rod can overlap with the central axis of the measuring side of the roller, and plays a positioning role for the measuring rod. The present disclosure has a simple structure, is easy to use, and has accurate measurement. The operator can quickly measure the discharge gap of the magnetic separator without the need for overhead cranes or other lifting equipment to disassemble and assemble the magnetic separator, avoiding the difficult operation and injury risk of workers in cleaning the slurry, and greatly improving work efficiency and safety factor.

[0036] The measuring device of the magnetic separator discharge gap is described in detail below through a specific embodiment:

[0037] Reference Figures 1 to 3 As shown, in the first aspect of the present disclosure, a device for measuring the discharge gap of a magnetic separator is provided, comprising a measuring rod 1 and a hook 2, wherein a yield portion 11 is provided in the middle portion of the measuring rod 1, and the yield portion 11 is used to accommodate the transmission shaft 101 of the drum 100 when the measuring rod 1 is placed along the central axis of the drum 100 of the magnetic separator, wherein the hook 2 is provided at the end of the measuring rod 1, the measuring rod 1 and the hook 2 are provided at right angles, and the hook 2 is used to hook the bottom of the drum 100.

[0038] During the measurement process, the yield portion 11 of the measuring rod 1 disclosed in the present invention can avoid the transmission shaft 101, so that the measuring rod 1 can overlap with the central axis of the measuring side of the roller 100, and plays a positioning role for the measuring rod 1. The present invention has a simple structure, is easy to use, and has accurate measurement. The operator can quickly measure the discharge gap of the magnetic separator without the need for overhead cranes or other lifting equipment to disassemble and assemble the magnetic separator, avoiding the difficult operation and injury risk of workers in cleaning the slurry, and greatly improving work efficiency and safety factor.

[0039] Specifically, the measuring rod 1 disclosed in the present invention can adopt a single metal rod body, the clearance portion 11 is machined into a U-shaped groove structure, and the hook 2 is welded and fixed to the rod end of the measuring rod 1 to ensure the advantages of anti-deformation and calibration-free. It is also set that the measuring rod 1 is segmented and fixed by threaded connection or snap fastening, and the hook 2 is quickly disassembled and assembled by a latch to facilitate transportation and replacement of worn parts. The rod body of the measuring rod 1 can adopt a carbon fiber reinforced resin matrix with metal reinforcement ribs embedded inside, which is both lightweight (weight <800g) and high strength (deflection <0.1mm / m). When measuring large magnetic separators, even if the length of the measuring rod 1 is long, it can ensure that the operator can measure easily. It should be noted that when measuring, the measuring rod 1 needs to have a certain stroke in the vertical direction of the bottom of the magnetic separator tank, so the diameter of the clearance portion 2 needs to be larger than the diameter of the transmission shaft 101, and the diameter data of the clearance portion 2 is set according to the adaptability of the magnetic separator model.

[0040] In some embodiments, a scale 3 is provided on the side of the measuring rod 1 opposite to the hook 2 .

[0041] In this embodiment, a scale 3 is provided on the side of the measuring rod 1 opposite the hook 2 to facilitate measurement readings. Specifically, scale 3 is located on the side opposite the measuring rod and hook, allowing direct reading of the length difference, eliminating secondary calculations. For example, if measuring rod 1 extends hook 2 into the bottom of the magnetic separator tank, the reading corresponding to the top edge of the upper drum 100 is 6. Then, if measuring rod 1 is raised and hook 2 is hooked to the bottom of drum 100, the reading corresponding to the top edge of the square drum 100 is 2, and the discharge gap is 4.

[0042] In some embodiments, a limiter is further included, the hook 2 is rotatably connected to the measuring rod 1, the limiter is connected to the measuring rod 1 and / or the hook 2, and the limiter is used to limit the rotation of the hook 2 relative to the measuring rod 1.

[0043] In this embodiment, by rotating the connecting hook 2 and limiting its rotation angle, the adaptability of the hook 2 to measurements in different spaces and scenes is ensured, while the hook 2 is stably hooked. Specifically, the limiter can be fixed with a ratchet mechanism or a pin to ensure that the hook 2 remains in a vertical position to improve measurement stability.

[0044] In some embodiments, the measuring rod 1 includes a first rod body 12 and a second rod body 13, the first rod body 12 is slidably connected to the second rod body 13, and a scale 3 is provided on the second rod body 13. A semicircular yielding portion 11 is provided on both the first rod body 12 and the second rod body 13, and the difference between the semicircular diameter of the yielding portion 11 of the first rod body 12 and the semicircular diameter of the yielding portion 11 of the second rod body 13 is the measuring range of the scale 3.

[0045] In this embodiment, Figure 2 As shown, the first rod 12 and the second rod 13 are matched through the slide rail. The semicircular diameter of the yield portion 11 of the first rod 12 is larger than the semicircular diameter of the yield portion 11 of the second rod 13. The clearance fit tolerance between the yield portion 11 of the second rod 13 and the transmission shaft 101 is ≤ 0.5mm to achieve reference positioning. When the yield portion 11 of the second rod 13 contacts the transmission shaft 101, the central axis of the first rod 12 overlaps with the central axis of the measuring surface of the roller 100 to ensure the measurement reference. It can be understood that, as Figure 2 The first rod 12 and the second rod 13 are arranged in parallel. When the yielding portion 11 of the second rod 13 contacts and engages with the transmission shaft 101 , the central axis of the second rod 13 and the central axis of the measuring surface of the roller 100 are offset to the side away from the first rod 12 .

[0046] In some embodiments, the hook 2 is disposed on the first rod 12 , and a scale indicator 4 is disposed on the first rod 12 . The scale indicator 4 is within the reading range of the scale 3 within the measuring range of the first rod 12 and the second rod 13 .

[0047] In this embodiment, the hook 2, positioned on the first rod 12 and coupled with the scale indicator 4, enhances measurement efficiency and accuracy. During the sliding adjustment process, the positional changes of the indicator 4 on the scale 3 of the second rod 13 can be directly observed, enabling quick reading of the measured value without the need for secondary positioning or auxiliary tools. Within the measuring range, the scale indicator 4 remains within the reading range of the scale 3, ensuring that the measuring rod 1 maintains the required coaxiality with the axis of the drum 100 during measurement. This constraint forces the operator to adjust within the preset range and prevents reference offset caused by out-of-range operation.

[0048] In some embodiments, the length of the rod portion of the first rod 12 provided with the scale indicator 4 and the length of the rod portion of the second rod 13 provided with the scale 3 are adjustable.

[0049] In this embodiment, the adjustable length design of the first and second rods 12, 13 enables compatibility with a variety of equipment specifications. Specifically, the measuring rod 1 can be configured as a telescopic rod. By adjusting the length of the two rods, it can adapt to the diameter differences of different magnetic separator drums, meeting the universal measurement needs of equipment ranging from small to very large, and avoiding tool failure due to equipment model changes. Furthermore, by precisely adjusting the relative position of the two rods, the scale 3 and the scale indicator 4 are precisely aligned, reducing the cumulative deviation caused by gap errors and improving the measurement accuracy of the discharge gap to ±0.3mm.

[0050] Specifically, quick adjustment is achieved through a threaded or slide rail locking mechanism, and the modular adjustable design avoids bending and deformation of the rod body due to long-term use.

[0051] In some embodiments, the diameters of the relief portions 11 of the first and second rods 12 and 13 are adjustable.

[0052] In this embodiment, the adjustable diameter design of the clearance portion 11 of the first rod body 12 and the second rod body 13 of the present disclosure can dynamically adapt to the size of the drive shaft 101, avoiding measurement tool failure due to shaft diameter differences. A single set of tools can cover different models such as permanent magnetic drum magnetic separators and wet magnetic separators. Specifically, the clearance portion 11 of the present disclosure is a portion of the measuring rod 1. For example, in the embodiment of a semicircular clearance portion 11, the clearance portion 11 can be configured as an arc-shaped telescopic rod, and the diameter of the clearance portion 11 can be adjusted by extending and retracting the telescopic rod.

[0053] In some embodiments, the hook 2 is detachably connected to the measuring rod 1 .

[0054] In this embodiment, the hook 2 and the measuring rod 1 disclosed in the present invention are detachable to increase the convenience of maintenance. The quick disassembly design allows the worn hook or rod to be replaced separately, avoiding the scrapping of the entire rod and reducing the maintenance cost. When adapting to different working conditions, there is no need to carry multiple sets of tools. Under special working conditions, only the hook 2 needs to be replaced. By replacing hooks of different specifications (such as flat hooks, magnetic hooks), it is compatible with the gap measurement of special shapes. After the worn parts are replaced independently, there is no need for overall calibration, only local calibration accuracy is required. The split structure reduces the risk of rod breakage caused by local force. Specifically, a pin locking mechanism can be used to set a conical plug at the end of the hook 2, and the measuring rod 1 matches the slot with a spring buckle. After insertion, the buckle automatically locks, and the pull-out resistance is ≥300N. It can also be quickly screwed through an ISO metric thread, such as M8×1.25, and matched with a locking washer to prevent vibration from falling off. In the use scenario of frequent disassembly and assembly, the hook 2 can be embedded with a neodymium iron boron magnet (magnetic induction intensity ≥0.5T) and adsorbed on the magnetic alloy end face of the measuring rod (1). This design significantly improves the flexibility and economy of measurement tools through standardized interfaces and diversified connection mechanisms.

[0055] In a second aspect of the present disclosure, a method for measuring the discharge gap of a magnetic separator is provided, which is applied to the device for measuring the discharge gap of a magnetic separator provided in the first aspect of the present disclosure, comprising:

[0056] Insert the measuring rod 1 through the side of the magnetic separator drum 100 into the bottom of the magnetic separator tank, so that the hook 2 contacts the bottom of the tank, and adjust the measuring rod 1 to overlap the central axis of the drum 100;

[0057] Measure the length L1 of the measuring rod 1 beyond the top of the drum 100;

[0058] Lift the measuring rod 1 vertically upward along the wall of the drum 100 until the hook 2 hooks the bottom of the drum 100;

[0059] Measure again the length L2 of the measuring rod 1 extending beyond the top of the drum 100;

[0060] The difference between L2 and L1 is the discharge gap of the magnetic separator, and the discharge gap is ΔL=L2-L1.

[0061] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0062] In the description of the present disclosure, it is to be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, cannot be understood as a limitation on the present disclosure.

[0063] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0064] The above are merely preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations of the present disclosure are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A device for measuring the discharge gap of a magnetic separator, characterized in that: It includes a measuring rod and a hook, wherein the middle part of the measuring rod is provided with a paving portion, and the paving portion is used to accommodate the transmission shaft of the drum when the measuring rod is placed along the central axis of the drum of the magnetic separator, wherein: The hook is arranged at the end of the measuring rod, the measuring rod and the hook are arranged at a right angle, and the hook is used to hook the bottom of the drum.

2. The device for measuring the discharge gap of a magnetic separator according to claim 1, characterized in that: A scale is provided on the side of the measuring rod opposite to the hook.

3. The device for measuring the discharge gap of a magnetic separator according to claim 1, characterized in that: It also includes a limiting member, the hook is rotatably connected to the measuring rod, the limiting member is connected to the measuring rod and / or the hook, and the limiting member is used to limit the rotation of the hook relative to the measuring rod.

4. The device for measuring the discharge gap of a magnetic separator according to claim 1, characterized in that: The measuring rod comprises a first rod body and a second rod body, wherein the first rod body is slidably connected to the second rod body, and a scale is provided on the second rod body, wherein: The first rod and the second rod are both provided with a semicircular giving portion, and the difference between the semicircular diameter of the giving portion of the first rod and the semicircular diameter of the giving portion of the second rod is the measuring range of the scale.

5. The device for measuring the discharge gap of a magnetic separator according to claim 4, characterized in that: The hook is arranged on the first rod, and a scale indicator mark is arranged on the first rod. The scale indicator mark is within the reading range of the scale within the measuring range of the first rod and the second rod.

6. The device for measuring the discharge gap of a magnetic separator according to claim 1, characterized in that: The lengths of the rod portion of the first rod body provided with the scale indicator mark and the rod portion of the second rod body provided with the scale are adjustable.

7. The device for measuring the discharge gap of a magnetic separator according to claim 1, characterized in that: The diameters of the relief portions of the first rod and the second rod are adjustable.

8. The device for measuring the discharge gap of a magnetic separator according to claim 1, characterized in that: The measuring rod is configured as a telescopic rod.

9. The device for measuring the discharge gap of a magnetic separator according to any one of claims 1 to 8, characterized in that: The hook is detachably connected to the measuring rod.

10. A method for measuring the discharge gap of a magnetic separator, applied to the device for measuring the discharge gap of a magnetic separator according to any one of claims 1 to 9, characterized in that: include: Insert the measuring rod through the side of the magnetic separator drum into the bottom of the magnetic separator tank, make the hook contact the bottom of the tank, and adjust the measuring rod to overlap with the central axis of the drum; Measure the length L1 of the measuring rod extending beyond the top of the drum; Lift the measuring rod vertically upward along the wall of the drum until the hook hooks the bottom of the drum; Measure again the length L2 of the measuring rod extending beyond the top of the drum; The difference between L2 and L1 is the discharge gap of the magnetic separator.

Images