Magnetic separator with adjustable magnetic field

Abstract

The present disclosure relates to the technical field of mining equipment, and in particular to a magnetic separator with an adjustable magnetic field. The magnetic separator with an adjustable magnetic field comprises a drum device with which the shape and strength of the magnetic field can be adjusted. The drum device includes a magnetic system module and a magnetic field radial adjustment assembly that causes the magnetic system module to rise or fall along the radial direction of the drum in order to adjust the shape and strength of the magnetic field. The magnetic separator with an adjustable magnetic field further comprises a magnetic field display device that displays the magnetic field parameters in real time based on the current position of the magnetic system. The magnetic separator with an adjustable magnetic field further comprises a double-acting trough body for direct and counter-current operation, enabling bidirectional operation in direct and counter-current modes.Countercurrent flow can be achieved by adjusting the characteristics of the magnetic field. The magnetic separator with adjustable magnetic field also includes real-time display of the sorting area.

Description

Cross-reference to related registrations

[0001] The present disclosure claims priority from the patent application filed on October 11, 2024, with the State Intellectual Property Office of the People's Republic of China entitled "Magnetic separator with adjustable magnetic field" under No. 202411419062.6. Technical field

[0002] The present disclosure relates to the technical field of mining equipment, and in particular to a magnetic separator with an adjustable magnetic field. Technical background

[0003] Permanent magnet drum separators are suitable for companies, institutions, and individual users in industries such as metallurgical ore mining and processing plants. They are used for separating fine-grained magnetic minerals or removing magnetic minerals mixed with non-magnetic minerals. The permanent magnet drum separator is a type of wet magnetic separator with high field strength. It utilizes a highly magnetic block made of rare-earth neodymium-iron-boron and a ferrite block to create a composite magnetic system with a high magnetic field strength. Permanent magnet drum separators offer advantages such as a large magnetic field penetration depth and a low probability of demagnetization. Therefore, such systems exhibit high processing capacity, strong adaptability to production fluctuations, and excellent separation efficiency.

[0004] The operating principle of the permanent magnet drum separator is as follows: After mining sludge has flowed through an ore feed box into a trough body, ore particles enter an ore feed zone of the trough body in a loose state under the influence of the water flow from an ore feed spray pipe; under the influence of a magnetic field, "magnetic agglomerates" or "magnetic chains" are formed due to the magnetic agglomeration of magnetic ore particles, and the "magnetic agglomerates" or "magnetic chains" are under magnetic influence in the mining sludge, therefore move towards a magnetic pole, are thus attracted to the outer wall of the drum and subsequently rotate to a magnetically weakened point at the edge of the magnetic system, and finally are released under the influence of the water from an ore discharge water pipe.

[0005] If the properties of a material used are altered or a different material is introduced, the applicability of the magnetic separator will be severely impaired, and optimal sorting efficiency will not be achievable. Furthermore, each mineral exhibits varying grain size, impurities, and magnetic susceptibility during an ore processing test, necessitating adjustable magnetic field control.

[0006] In the state of the art, some magnetic separators with adjustable magnetic fields are used, e.g.: Patent specification CN202061704U discloses a water-spraying magnetic separator with an adjustable magnetic field, consisting of a machine base, a magnet, a support wheel, a feed pipe, a rotating drum, a gear, a spray tube, a discharge trough, an adjusting screw, and a receiving trough, wherein the magnetic field is adjusted by manually turning the adjusting screw. Patent specification CN201505573U discloses a strong magnetic drum magnetic separator with an adjustable magnetic field, wherein the adjustment is made by means of screws or nuts.

[0007] Patent specification CN210121527U discloses a permanent magnetic separator with adjustable magnetic field, using a magnetic control unit consisting of a magnetic system, a lifting device, a lifting device shaft, a steering handle, and a steering device hollow shaft, and the adjustment of the entire magnetic field can be done at once.

[0008] Patent specification CN201978813U discloses a magnetic separation drum with an adjustable magnetic field, wherein a magnetic system support frame and an adjusting screw are used and a spring return is employed.

[0009] Patent specification CN116328941B discloses a system or method for the instantaneous adjustment of a magnetic field based on the monitoring of a production process, wherein the monitoring and timely control of the production process can be ensured depending on data acquired by sampling, and wherein the magnetic field assembly comprises a spindle and n permanent magnets, a control assembly comprises n control modules, the control module comprises an interchangeable assembly and a connecting piece, and the n permanent magnets are each uniquely connected to the n adjustment modules by means of the n connecting pieces.

[0010] Patent specification US2013 / 0240413 discloses a magnetic separator with an adjustable magnetic field, and in this system the position of a magnetic body is adjusted using a connecting rod-like mechanical device.

[0011] Patent US8196751B2 of ERIEZ Manufacturing CO. discloses a permanent magnet separator with adjustable magnetic field, wherein a more complex segmented connecting rod device is used to control the positions of multiple magnetic poles, and magnetic bodies located at different distances and positions outside the drum can generate different magnetic field strengths.

[0012] The problem is this: although magnetic separators using related technology allow for the adjustment of the magnetic field, a user usually has to repeatedly adjust the magnetic field based on experience, making it inconvenient to specifically adjust the magnetic field for different ore samples in order to achieve appropriate sorting. Subject of the revelation

[0013] The present disclosure relates to an objective of providing a magnetic separator with an adjustable magnetic field in order to solve, to some extent, the technical problem that a user normally has to repeatedly adjust the magnetic field based on experience, making it inconvenient to adjust the magnetic field with respect to different ore samples for appropriate sorting.

[0014] The present disclosure provides a magnetic separator with an adjustable magnetic field, comprising: a drum device with which the magnetic field strength is adjustable, wherein the drum device comprises a drum, a magnetic system module arranged in the drum, and a magnetic field radial adjustment assembly connected to the magnetic system module to cause the magnetic system module to rise or fall along the radial direction of the drum and thus adjust the magnetic field strength.The magnetic separator with adjustable magnetic field further comprises a magnetic field indicator device, which includes a driver and a display module located outside the drum, wherein the driver is connected to the magnetic field radial adjustment assembly to follow the movement of the magnetic field radial adjustment assembly, so that a corresponding relationship is generated between the position of the driver and the position of the magnetic system module, and wherein the display module contains magnetic field data corresponding to different positions of the driver and including the magnetic field strength, and the display module is able to indicate the current magnetic field data according to the current position of the driver.

[0015] Furthermore, the magnetic field radial adjustment assembly comprises: an adjusting shaft, wherein part of the adjusting shaft is located inside the drum while the other part is located outside the drum; a radial adjusting piece connected to the magnetic system module; and a conversion structure capable of converting the rotation of the adjusting shaft into a linear movement of the radial adjusting piece along the radial direction of the drum, wherein the driver is arranged on the part of the adjusting shaft located outside the drum to follow the movement of the adjusting shaft.

[0016] Furthermore, the magnetic field radial adjustment assembly includes a connecting piece arranged in the drum and fixable relative to the adjusting shaft, and which has a sliding hole. The radial adjusting piece is a magnetic pole slider and is arranged to slide along the sliding hole. The conversion structure comprises a track plate, a spiral groove arranged on the track plate, and a sliding tooth arranged on the magnetic pole slider, wherein the track plate is fixedly connected to the adjusting shaft and the sliding tooth is movable along the spiral groove.

[0017] Furthermore, the drum device is capable of adjusting the shape of the magnetic field. The magnetic system module comprises a plurality of magnetic pole units arranged one behind the other along the circumferential direction of the drum, each magnetic pole unit comprising a plurality of magnetic pole modules arranged one behind the other along the axial direction of the drum; a plurality of radial adjusters are provided, the plurality of magnetic pole units being uniquely and releasably connected to the plurality of radial adjusters, and the shape of the magnetic field is adjustable by connecting the radial adjuster to another of the magnetic pole units.

[0018] Furthermore, the driver comprises a rotating element that is attached to the portion of the adjusting shaft located outside the drum. Alternatively, the driver comprises a slide that is arranged on the portion of the adjusting shaft located outside the drum by means of a threaded connection. The magnetic field indicator device further comprises a mounting base that is fixedly arranged and provided with a sliding limiting structure, wherein the slide is slidably movable along the axial direction of the adjusting shaft, subject to the limitations of the sliding limiting structure.

[0019] Furthermore, the display module comprises a pointer and a magnetic field data plate, the magnetic field data being specified on the magnetic field data plate. The pointer is rigidly connected to the driver and is able to follow the movement of the driver to indicate the current magnetic field data of the magnetic field data plate according to the current position of the driver.

[0020] Furthermore, the display module comprises the following: a position sensing element for sensing the current position of the driver; a data processor, wherein the position sensing element is in communication connection with the data processor and the magnetic field data are stored in the data processor; and a display device, wherein the data processor is able to process data of the position information of the driver and transmit the resulting current magnetic field data to the display device, wherein the display device comprises a screen capable of displaying the current magnetic field data.

[0021] Furthermore, the magnetic field data includes the shape of the magnetic field, the respective magnetic parameters, and magnetic parameter curves for the majority of the magnetic pole units. The screen comprises multiple display areas to show at least the magnetic field strength, the shape of the magnetic field, the respective magnetic parameters of the majority of the magnetic pole units, and the respective magnetic parameter curves of the majority of the magnetic pole units.

[0022] Furthermore, the magnetic separator with adjustable magnetic field comprises the following: a sorting chamber adjustment device connected to the drum device, and an immersion depth displacement sensor capable of detecting the displacement of the bottom of the drum and transmitting it to the data processor, the data processor determining the position information of the bottom of the drum according to the displacement and transmitting it to the display device.

[0023] Furthermore, the drum device comprises the following: a magnetic tilt angle adjustment assembly comprising a connecting shaft connected to the magnetic system module, wherein part of the connecting shaft is located outside the drum while another part is located inside the drum, and wherein the connecting shaft is provided with a connecting hole extending along the axial direction of the connecting shaft and at least one section of the adjusting shaft is arranged through the connecting shaft; a trough body; and a position indicator panel connected to the part of the connecting shaft located outside the drum; wherein the position indicator panel is used to display the bottom contour of the drum and the position of the magnetic system module, as well as to display the dimensions orthe position of a sorting space formed by the current position of the drum and the bottom of the trough body; and wherein the position indicator panel rotates together with the connecting shaft, thereby displaying information about the magnetic tilt angle and the magnetic wrap angle.

[0024] Furthermore, the magnetic separator with adjustable magnetic field comprises the following: a trough body, which is a double-acting trough body capable of direct and counter-current operation, with a double-acting sorting function also capable of direct and counter-current operation; wherein the magnetic pole slider is connected to various magnetic pole units, and the majority of the magnetic pole units form the magnetic system module and are arranged symmetrically around a center line. In combination with the trough body with the double-acting sorting function, bidirectional operation in direct and counter-current operation is achieved by adjusting the magnetic tilt angle of the magnetic system module.

[0025] The magnetic separator with adjustable magnetic field provided in the present disclosure has at least the following advantageous effects: 1. The present disclosure enables visual adjustment of the magnetic field strength, which facilitates operation for a user and simplifies the adjustment of the magnetic field for different ore samples for appropriate sorting. 2. In the magnetic separator with adjustable magnetic field provided in the present disclosure, the shape and strength of the magnetic field can be adjusted by connecting the magnetic pole slider to different magnetic pole units and causing the magnetic system module to rise or fall along the radial direction of the drum. Furthermore, the magnetic field radial adjustment assembly of this magnetic separator with adjustable magnetic field has a simple and compact structure, which is user-friendly and cost-effective, enabling a compact and space-saving design for the magnetic separator. 3. The present disclosure allows the magnetic field shape or magnetic field strength of the magnetic separator to be adjusted visually. 4. The magnetic separator of the present disclosure has a wide range of adjustable magnetic flux density. By changing different magnetic pole modules and adjusting the magnetic field, a range from 300 Gs to 8000 Gs can be covered. Furthermore, the parameters of the magnetic space distribution can be adjusted for four groups of magnetic poles, and the adjustment process is bidirectionally visible throughout. This ensures ease of use during the adjustment process. Under the same magnetic pole module, the parameter adjustment of the magnetic field can be performed using a structure in the form of a rotating shaft. 5. The magnetic separator of the present disclosure enables a visible adjustment of the positional relationships in the magnetic sorting space during the entire process and can adapt to sorting experiments of different ore samples. 6. The present disclosure enables a double-acting ore processing system operating in both co-current and counter-current modes, and the internal mechanics and overall design are simple, such that the double-acting ore processing system can be switched between counter-current and co-current directions simply by adjusting the magnetic tilt angle. In combination with the settings for the magnetic field shape, magnetic field strength, and sorting space, the entire process of magnetic separation of the ore samples is essentially fully covered. 7. In the present disclosure, the magnetic field coefficients and the sorting gap are intuitively displayed and monitored to calibrate the key values ​​of the parameters of the experimental magnetic separator, whereby its type selection data can serve as a guideline for the parameter design of the magnetic separator for diverse ore samples.

[0026] It is understood that the foregoing general description and the following specific embodiments both serve for illustrative purposes and do not limit the present disclosure. The drawings included herein, which form part of the description, constitute the subject matter of this disclosure. Furthermore, the description and the drawings serve to explain the principle of this disclosure. Description of drawings

[0027] In order to illustrate technical solutions in specific embodiments of the present disclosure or in the prior art more clearly, the accompanying drawings, which are necessary for the description of the specific embodiments or the prior art, are briefly presented below; and of course, the accompanying drawings in the following description show only some of the embodiments of the present disclosure, and further drawings could be obtained by a person skilled in the art with reference to these drawings without inventive step. Fig. Figure 1 shows a schematic structural representation of a magnetic separator with an adjustable magnetic field according to an embodiment of the present disclosure; Fig. Figure 2 shows a schematic structural representation of a drum device in which Fig. 1 magnetic separator shown with adjustable magnetic field; Fig. Figure 3 shows a schematic structural representation of a magnetic field radial adjustment assembly in which Fig. 1 magnetic separator shown with adjustable magnetic field; Fig. Figure 4 shows a schematic local structural representation of the in Fig. 3 magnetic field radial adjustment assembly shown; Fig. Figure 5 shows a schematic structural representation of a display module in which the following are located: Fig. 1 magnetic separator shown with adjustable magnetic field; Fig. Figure 6 shows a schematic structural representation of another display module in which the Fig. 1 magnetic separator shown with adjustable magnetic field; Fig. Figure 7 shows a schematic structural representation of the in Fig. 1 magnetic separator with adjustable magnetic field shown in front view; Fig. Figure 8 shows a schematic structural representation of the in Fig. 1 magnetic separator shown with adjustable magnetic field when operating in direct current; Fig. Figure 9 shows a schematic structural representation of the in Fig. 1 magnetic separator shown with adjustable magnetic field during counter-current operation; Fig. Figure 10 shows a curve of the magnetic flux density B, which is generated on the surface of the drum at the sorting area by the adjustable magnetic system module according to an embodiment of the present disclosure; Fig. Figure 11 shows a numerical curve of the gradient of the magnet system module according to an embodiment of the present disclosure in the fine sorting area; and Fig. Figure 12 shows a curve of the attraction force parameter of the magnet system module according to an embodiment of the present disclosure in the fine sorting area.

[0028] Reference numerals: 1-Drum support frame; 2-Drum device; 21-Drum; 22-Magnetic system module; 211-Drum body; 212-Drum body flange; 221-Magnetic pole unit; 23-Magnetic field radial adjustment assembly; 231-Adjusting shaft; 232-Track plate; 233-Spiral groove; 234-Magnetic pole slider; 235-Handwheel; 236-Locking piece; 237-First housing; 238-Second housing; 24-Magnetic tilt angle adjustment assembly; 241-Connecting shaft; 242-Drive rod; 243-Mounting frame; 244-Positioning piece; 5-Rack; 6-Drum horizontal adjustment device; 7-Sorting chamber adjustment device; 8-Trough body; 81-Overflow level control; 82-Magnetic ore outlet; 9-Magnetic field indicator device; 91-Mounting base; 92-Limiting structure; 93-Slide; 94-Position sensing element; 95-Data processor; 96-Screen; 97-Magnetic field data plate; 10-Position indicator panel; 20-Geared motor; 30-Drive shaft; 40-Drive bearing block; 50-Drum body rotation bearing block; 60-Adjustment bearing block; 70-Ore loading assembly;80-immersion depth displacement sensor.; Detailed description of embodiments

[0029] The technical solutions of the present disclosure are to be clearly and completely described below with reference to the drawings, and of course the described embodiments are only partial embodiments, instead of all the embodiments of this disclosure.

[0030] As a rule, the assemblies of the embodiments of the present disclosure, which are described and illustrated herein in the drawings, can be arranged and designed in several different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings should only represent selected embodiments of this disclosure, rather than limiting the claimed scope of this disclosure.

[0031] All further embodiments which could be obtained by a person skilled in the art based on the embodiments in this disclosure without inventive step fall within the scope of protection of this disclosure.

[0032] In describing this revelation, it must be explained that orientation or positional relationships indicated by terms such as "central," "above," "below," "left," "right," "vertical," "horizontal," "inside," and "outside" are orientation or positional relationships shown based on the drawings. These terms serve only to facilitate and simplify the description of this revelation, rather than suggesting or implying that the device or element mentioned should have a specific orientation and be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations of the revelation. Furthermore, terms such as "first" and "second" serve only descriptive purposes and should not be understood as suggesting or implying any relative importance.

[0033] In the description of this disclosure, it must be explained that terms such as "assemble," "connect," and "link" should be understood in a broad sense unless otherwise expressly stated and defined. For example, it could refer to a fixed connection, a detachable connection, or an integrated connection; it could refer to a mechanical connection or an electrical connection; and it could refer to a direct connection or an indirect connection through an intermediate element or internal communication between two elements. For the person skilled in the art, the specific meanings of the above terms in this disclosure could be understood according to specific circumstances.

[0034] Furthermore, terms like "horizontal," "vertical," and "overhanging," etc., do not require that a component be perfectly horizontal or overhanging; on the contrary, the component could be slightly inclined. For example, the term "horizontal" simply indicates a direction that is more horizontal than "vertical," rather than indicating a perfectly horizontal structure, and this structure can be slightly inclined.

[0035] As in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 to Fig. As shown in Figure 10, the present disclosure provides a magnetic separator with an adjustable magnetic field (which may be a permanent magnetic drum separator suitable for wet separation, allowing adjustment of both the shape and strength of the magnetic field), comprising a drum device 2 capable of enabling adjustment of the magnetic field strength; the drum device 2 comprises a drum 21, a magnetic system module 22 arranged in the drum 21, and a magnetic field radial adjustment assembly 23 connected to the magnetic system module 22 to enable lifting or adjusting the magnetic field strength.The magnetic field separator with adjustable magnetic field further comprises a magnetic field indicator device 9, which includes a driver and a display module located outside the drum 21; the driver is connected to the magnetic field radial adjustment assembly 23 to follow the movement of the magnetic field radial adjustment assembly 23 and thus establish a corresponding relationship between the position of the driver and the position of the magnetic field module 22; the display module contains magnetic field data corresponding to different positions of the driver and includes the magnetic field strength; and the display module is able to display the current magnetic field data according to the current position of the driver.

[0036] In the present embodiment, the lifting or lowering of the magnetic system module 22 along the radial direction of the drum 21 is effected by the magnetic field radial adjustment assembly 23 in order to adjust the distance between the magnetic system module 22 and the inner wall of the drum 21, and thus the magnetic field strength. The distance traveled by the magnetic system module 22 depends on the magnitude of the movement of the magnetic field radial adjustment assembly, thus establishing a corresponding relationship between the magnitude of the movement of the magnetic field radial adjustment assembly 23 and the distance traveled by the magnetic system module 22. If the magnetic field radial adjustment assembly 23 moves to a specific adjustment position, the magnetic system module 22 moves accordingly to a specific module position. If the magnetic field radial adjustment assembly 23 moves to a different adjustment position, the magnetic system module 22 moves accordingly to a different module position.There is a corresponding relationship between the position of the magnetic field radial adjustment assembly 23 and the position of the magnetic system module 22. Simultaneously, the magnetic field radial adjustment assembly 23 moves the driver along with it. The magnitude of the movement of the magnetic field radial adjustment assembly 23 determines the magnitude of the driver's movement, thus establishing a corresponding relationship between the magnitude of the movement of the magnetic field radial adjustment assembly 23 and the magnitude of the driver's movement. If the magnetic field radial adjustment assembly 23 moves to a specific adjustment position, the driver moves accordingly to a specific subsequent position. If the magnetic field radial adjustment assembly 23 moves to a different adjustment position, the driver moves accordingly to a different subsequent position; that is, there is a corresponding relationship between the position of the magnetic field radial adjustment assembly 23 and the position of the driver.Therefore, there is a corresponding relationship between the position of the driver and the position of the magnetic system module 22, and a specific subsequent position of the driver corresponds to a specific module position of the magnetic system module 22.

[0037] If the magnet system module 22 is in a different position relative to the drum 21, the magnetic field data that enable magnetic deposition, such as magnetic field strength, will also differ. One module position corresponds to one set of magnetic field data, meaning that each subsequent position of the driver corresponds to one set of magnetic field data, and different subsequent positions of the driver correspond to different sets of magnetic field data. The display module can show the corresponding current magnetic field data according to the current position of the driver, and the display module can at least show the current magnetic field strength if the magnetic field data includes the magnetic field strength.When selecting a suitable magnetic field strength according to a specific material to be sorted, a user can intuitively know whether the setting is being carried out correctly during the adjustment process of the magnetic system module 22 using the magnetic field radial adjustment assembly 23, based on the current magnetic field strength indicated by the display module; and when the display module shows a desired magnetic field strength, the user can then end the adjustment of the position of the magnetic system module 22, thus making the adjustment process of the magnetic field strength visible.

[0038] In the magnetic separator with adjustable magnetic field provided in the present embodiment, the adjustment process of the magnetic field strength is visible, which allows the user to intuitively understand the adjustment process of the magnetic field strength, so that the magnetic field strength can be set quickly, cheaply and accurately to the magnetic field strength required for the material, which makes it easier for the user to use.Furthermore, complex magnetic field parameters are transformed into simple position changes of the driver by means of the magnetic separator with adjustable magnetic field provided in the present embodiment, and corresponding magnetic field data can be obtained simply by changing the position of the driver (which can be understood as displacement of the driver, angular displacement, or linear displacement), thus avoiding the use of a magnetic sensor for real-time measurement and the use of a high-intensity element, which reduces production and maintenance costs.Furthermore, the driver is located outside the drum 21, which facilitates assembly; and the user can also understand the movement situation of the magnetic field radial adjustment assembly 23 based on the movement situation of the driver, which is more advantageous for the user to understand the setting situation of the magnetic field strength.

[0039] It is necessary to explain that the corresponding relationship between the position of the magnetic system module 22 and the magnetic field data can be obtained through methods such as experiments, simulations, and calculations. Specifically, the corresponding relationship between the position of the magnetic system module 22 and the magnetic field coefficients can be obtained through methods such as experiments, simulations, and calculations, where the magnetic field coefficient includes a magnetic field strength B and a magnetic field gradient. An attraction force factor, in turn, can be obtained through an integrative calculation of the magnetic field strength and the magnetic field gradient. Based on the attraction force factor, the attraction force for an ore can then be determined.

[0040] The attraction strength depends on the ore weight, specifically particle size, ore specific gravity, and relative magnetic permeability, while the attractive force must overcome gravity and centripetal force. For ores with varying properties, it is necessary to adjust the effective magnetic field because the drum diameter 21 is fixed. Therefore, according to the basic principle of magnetic separation, the magnetic separator should specify values ​​for the magnetic flux density B and the attraction force factor. This facilitates the adjustment and control of the corresponding parameters of the magnetic separator by an operator, while only unambiguous experimental magnetic field parameters can provide a theoretical basis for selecting the type of magnetic separator for downstream production equipment.

[0041] Calibration can be performed in combination with two modules: magnetic circuit design and data analysis. By assigning values ​​to the specific parameters and materials of a magnetic circuit unit under a given condition, detailed data on magnetic field parameters are determined through software calculations. This generates a series of data sets on changes in the key path or the attraction force of the adjustable magnetic field. These data sets have a corresponding relationship with the movement of the drive unit, allowing detailed magnetic field data to be derived from the drive unit's position changes.

[0042] Of course, other desired magnetic field-related data can also be determined, which need not be described again here.

[0043] In detail, the magnetic separator with adjustable magnetic field further comprises a drum support frame 1, and the drum 21 is rotatably arranged on the drum support frame 1, as shown in Fig. 1 shown.

[0044] Conventional means can be applied to the magnetic field radial adjustment assembly 23. For example, the magnetic field radial adjustment assembly 23 comprises a stationary shaft, an adjustment plate, an adjustment slide 93, and an electric telescopic rod, wherein the stationary shaft passes through the drum 21 and is connected to the drum support frame 1 to avoid interfering with the rotation of the drum 21, the adjustment plate is attached to the stationary shaft, the adjustment slide 93 is slidably arranged on the adjustment plate along the radial direction of the drum 21, and the electric telescopic rod is attached to the adjustment plate and is rigidly connected to the adjustment slide 93 to drive the adjustment slide 93 to move, and thereby drive the magnetic system module 22 to move.

[0045] As an optional solution, the magnetic field radial adjustment assembly comprises the following: an adjusting shaft 231, wherein part of the adjusting shaft 231 is located inside the drum 21, while the other part is located outside the drum 21; a radial adjuster connected to the magnetic system module 22; and a conversion structure capable of converting the rotation of the adjusting shaft 231 into a linear movement of the radial adjuster along the radial direction of the drum 21; wherein the driver is arranged on the part of the adjusting shaft 231 located outside the drum 21 to follow the movement of the adjusting shaft 231.

[0046] In the present embodiment, the adjusting shaft 231 is driven to rotate, and the conversion structure converts the rotation of the adjusting shaft 231 into a linear movement of the radial adjusting element along the radial direction of the drum 21, and the radial adjusting element causes the magnetic system module 22 to rise or fall along the radial direction of the drum 21. The magnetic field radial adjusting assembly 23 of this design requires little space.

[0047] The conversion structure can be designed in a variety of forms. For example, the conversion structure comprises a gear, a rack, and a connecting rod; wherein the gear is mounted coaxially on the adjusting shaft 231, the rack and the gear mesh with each other, and one end of the connecting rod is articulated with the rack, while the other end is articulated with the radial adjusting element; the radial adjusting element can be a slide 93, a slide rod, etc.

[0048] As an optional solution, the magnetic field radial adjustment brewing unit comprises 23, as shown in Fig. 2, Fig. 3 to Fig. Figure 4 shows a connecting piece arranged in the drum 21 and fixable relative to the adjusting shaft 231, and on which a sliding hole is provided; the radial adjusting piece is a magnetic pole slider 234 and is arranged to slide along the sliding hole; the conversion structure comprises a track plate 232, a spiral groove 233 arranged on the track plate 232, and a sliding tooth arranged on the magnetic pole slider 234; the track plate 232 is in fixed connection with the adjusting shaft 231; and the sliding tooth is movable along the spiral groove 233.

[0049] In the present embodiment, the adjusting shaft 231 is driven to rotate. During the rotation of the adjusting shaft 231, the connecting piece remains stationary. In the circumferential direction, the magnetic pole slider 234 and the track plate 232 are restricted, and the adjusting shaft 231 causes the track plate 232 to rotate. The spiral groove 233 then follows the rotation, causing the magnetic pole slider 234 to move relative to the spiral groove 233. This allows the magnetic pole slider 234 to move radially towards or away from the drum 21, so that the magnetic system module 22 is also moved towards or away from the drum 21.In this way, the distance between the side of the magnetic system module 22 facing away from the adjusting shaft 231 and the inner wall of the part of the drum 21 corresponding to the magnetic system module 22 is adjusted, and a sorting area is formed by the outer wall of the part of the drum 21 corresponding to the magnetic system module 22. Thus, the distance between the magnetic system module 22 and the sorting area is adjusted, thereby also adjusting the magnetic field strength of the sorting area. The entire adjustment process is easy to operate. The magnetic field radial adjustment assembly 23 of this magnetic separator with adjustable magnetic field has a simple and compact structure, and the adjustment of the shape of the magnetic field is straightforward.The magnetic field strength can be adjusted using a simple mechanical structure, making operation easy and keeping plant costs low, which also allows the magnetic separator with adjustable magnetic field to be built compactly and in a space-saving manner.

[0050] As in Fig. 2, Fig. 3 to Fig. As shown in Figure 4, the drum device 2, based on the above embodiments, can further adjust the shape of the magnetic field; the magnetic system module 22 comprises several magnetic pole units 221 arranged one behind the other along the circumferential direction of the drum 21, each magnetic pole unit 221 comprising several magnetic pole modules arranged one behind the other along the axial direction of the drum 21; there are several radial adjusters, and the several magnetic pole units 221 are detachably connected to the several radial adjusters in a unique manner; and the shape of the magnetic field is adjustable by connecting the radial adjuster to another of the magnetic pole units 221.

[0051] In the present embodiment, each magnetic pole unit 221 can be functionally equipped with a magnetic pole module having different magnetic field parameters, and the multiple magnetic pole units 221 form a complete magnetic system module 22. The magnetic system modules 22, which consist of magnetic pole modules with different magnetic field parameters, have different output magnetic field strengths, magnetic wrap angles, numbers of magnetic poles, etc. The multiple magnetic pole units 221 are detachably connected to the multiple magnetic pole sliders 234 in a unique manner, allowing a suitable magnetic system module 22 to be exchanged depending on the specific requirements of the magnetic field setting.Therefore, the shape and strength of the magnetic field in the magnetic separator with adjustable magnetic field provided in the present embodiment can be adjusted by connecting the magnetic pole slider 234 to different magnetic pole units 221, thus causing the magnetic system module 22 to rise or fall along the radial direction of the drum 21.

[0052] For the same magnetic system module 22, an adjustable magnetic field strength range can be achieved by adjusting the distance between the magnetic system module 22 and the sorting area of ​​the drum 21. Different magnetic field strength ranges can be created by changing the magnetic system module 22. By combining the adjustment of the distance between the magnetic system module 22 and the sorting area within a predetermined adjustment stroke with the interchangeability of the magnetic system module 22, the magnetic separator with adjustable magnetic field, as provided in the embodiments of this disclosure, allows for a magnetic field strength range of 300-8000 Gs, thereby enabling the sorting of more types of materials.

[0053] As an optional solution, the driver includes a rotating piece that is attached to the part of the adjusting shaft 231 located outside the drum 21.

[0054] In the present embodiment, the driver follows the rotation of the adjusting shaft 231, i.e., the angular displacement of the driver corresponds to the linear displacement of the radial adjusting element (specifically, this may be the magnetic pole slider 234).

[0055] As an optional solution, the actuator includes a slide 93 which is arranged by means of a threaded connection on the part of the adjusting shaft 231 located outside the drum 21. Specifically, the part of the adjusting shaft 231 located outside the drum 21 is provided with an external thread, while the slide 93 is provided with a through-hole, the through-hole having an internal thread that matches the external thread. The magnetic field indicator device 9 further includes a mounting base 91, which is fixedly arranged (connectable to the drum support frame 1) and provided with a sliding limiting structure 92, wherein the slide 93 is slidable along the axial direction of the adjusting shaft 231 subject to the sliding limiting structure 92.

[0056] In the present embodiment, the movement of the slide 93 is effected by a threaded spindle mechanism, and the rotation angle of the track plate 232 can be converted by the linear displacement of the slide 93, thereby determining the stroke distance of the magnet system module 22.

[0057] As an optional solution, the display module includes a pointer and a magnetic field data plate 97, as described in Fig. 6 shown; the magnetic field data are indicated on the magnetic field data plate 97 (forming a scale); and the pointer is in fixed connection with the driver, and the pointer is able to follow the movement of the driver to indicate the current magnetic field data of the magnetic field data plate 97 according to the current position of the driver.

[0058] In the present embodiment, the magnetic field data plate 97 can be attached to the mounting base 91. The rotation of the adjusting shaft 231 controls the up-and-down movement of the magnetic system module 22, and simultaneously the actuator moves the pointer. The pointer indicates the corresponding location on the magnetic field data plate 97, namely the magnetic field data for the position where the magnetic system module 22 is currently located.

[0059] As in Fig. As shown in Figure 5, the mounting base 91, based on the above embodiments, is further provided with a viewing window, and the magnetic field data plate 97 is arranged on the viewing window so that the user can observe the movement situation of the driver through the viewing window.

[0060] As in Fig. As shown in Figure 5, the magnetic separator with adjustable magnetic field, based on the embodiments above, can further comprise a locking element 236 for locking the actuating shaft 231 in a position. The locking element 236 can be constructed in various ways, for example, by fitting a closure into a hole or by forming a snap-fit ​​structure. The locking element 236 can be connected to the drum support frame 1. If the magnetic field indicator device 9 includes a mounting base 91, the locking element 236 can be arranged between the mounting base 91 and the actuating shaft 231, with the locking element 236 serving to fix the position of the actuating shaft 231. As shown in Figure 5, the locking element 236 can be arranged between the mounting base 91 and the actuating shaft 231. Fig. As shown in Figure 5, the locking piece 236 comprises a limiting plate connected to the mounting base 91, a clamping ring connected to the adjusting shaft 231, and a connecting plate connected between the limiting plate and the clamping ring by means of a fastening element, or the like.

[0061] The pointer follows the rotation of the driver if the driver is a rotating element and rotates synchronously with the adjusting shaft 231; and the magnetic field data plate 97 can be designed as a circular disk or sector or the like, arranged coaxially with the adjusting shaft 231. If the driver, including the slide 93, moves in a straight line following the movement of the adjusting shaft 231, the magnetic field data plate 97 can be a strip-shaped plate extending along the axial direction of the adjusting shaft 231.

[0062] As an optional solution, the display module includes, as shown in Fig. Figure 5 shows: a position sensing element 94, which serves to detect the current position of the driver; a data processor 95, wherein the position sensing element is in communication connection with the data processor 95 and the magnetic field data are stored in the data processor 95; and a display device, wherein the data processor 95 is able to process data of the position information of the driver and to transmit the current magnetic field data obtained thereby to the display device; wherein the display device comprises a screen 96 which is able to display the current magnetic field data.

[0063] In the present embodiment, the data processor 95 can calculate and analyze the information transmitted by the position sensing element 94 in order to output the final magnetic field-related information to the screen 96. The user can directly access the magnetic field information via the screen 96, which facilitates use.

[0064] The position detection element 94 can be configured as a displacement sensor, whereby the position of the driver is determined by measuring the displacement of the driver using the displacement sensor. An angular displacement sensor can be used as the displacement sensor if the driver rotates in accordance with the actuating shaft 231; if the driver moves in a straight line in accordance with the rotation of the actuating shaft 231, a linear displacement sensor can be used as the displacement sensor.

[0065] It is to be explained that the magnetic field display device 9 can display the magnetic field information only by means of the position sensing element 94, the data processor 95, and the display device; and that the magnetic field information can also be displayed only by means of the pointer and the magnetic field data plate 97; and that it is also possible to display the magnetic field information both by means of a displacement sensing element, the data processor 95, and the display device, as well as by means of the pointer and the magnetic field data plate 97.

[0066] Furthermore, the magnetic field data based on the above embodiments also include the shape of the magnetic field, respective magnetic parameters and magnetic parameter curves of the multiple magnetic pole units 221; and the screen 96 comprises multiple display areas to show at least the magnetic field strength, the shape of the magnetic field, the respective magnetic parameters of each magnetic pole unit 221, and the respective magnetic parameter curves of each magnetic pole unit 221.

[0067] Many results of the magnetic field data can be derived from the movement distance of the carriage 93. For example, there are four magnetic pole units 221, namely a feed magnetic pole, a sorting magnetic pole, a fine sorting magnetic pole, and a discharge magnetic pole, which accordingly form a feed area, a sorting area, a fine sorting area, and a discharge area. Fig. Figure 10 shows the curve of the magnetic flux density B (unit: Gs) generated on the surface of the drum at the sorting room by the adjustable magnetic system module 22 according to the present example of this disclosure, wherein the adjustable values ​​of several magnetic pole units 221 in the range of 0-20 mm are combined into a numerical curve as the magnetic field parameter curve. Fig. Figure 11 shows the gradient curve of the magnetic system module 22 according to the present example in the fine sorting area, where the adjustable values ​​of several magnetic pole units 221 are combined and calibrated to form a numerical curve as the magnetic field parameter curve. Fig. Figure 12 shows a numerical curve of the attractive force parameter (unit: Gs). 2 / mm) of the magnetic system module 22 according to this example of the present disclosure in the fine sorting area, where this quantity represents the parameter for the magnetic attraction force in the separation operation of the magnetic separator, and a different ore sample requires a different magnetic attraction force. The method for intuitively observing magnetic field parameters according to the present disclosure requires only a simple structure without complicated devices (such as magnetic sensors), is characterized by low cost, stability, and high efficiency, which translates into broad market value. Multiple display areas, capable of showing different parameter data, allow the user to more clearly grasp the magnetic field properties.

[0068] As in Fig. As shown in Figure 1, the drum device 2, based on the above embodiments, further comprises a magnetic tilt angle adjustment assembly 24; the magnetic tilt angle adjustment assembly 24 can comprise a connecting shaft 241, a drive rod 242, a mounting frame 243, and a positioning element 244, wherein a part of the connecting shaft 241 is located outside the drum 21, while another part is located inside the drum 21, and one end of the drive rod 242 is in fixed connection with the part of the connecting shaft 241 located outside the drum 21 (the connection can be made, for example, by welding, press fit, or by means of a fastener); the drive rod 242 is located outside the drum 21; the mounting frame 243 is attached to the drum support frame 1;and the positioning piece 244 is connected at the position where the drive rod 242 and the mounting frame 243 for securing the drive rod 242 are connected. The connecting piece is attached to the connecting shaft 241. The connecting shaft 241 is provided with a connecting hole extending along its axial direction (the connecting shaft 241 may be hollow), and at least a section of the adjusting shaft 231 is arranged through the connecting shaft 241.

[0069] In the magnetic separator with adjustable magnetic field provided in the present embodiment, the connecting shaft 241 can be driven to rotate about its own axis as the axis of rotation such that the connecting shaft 241 causes the connecting piece to rotate about the axis of the connecting shaft 241 as the axis of rotation such that the connecting piece causes the radial magnetic pole slider 234 to pivot about the axis of the connecting shaft 241 as the pivot axis, thereby causing the magnetic system module 22 to pivot about the axis of the connecting shaft 241 as the pivot axis. In this way, the magnetic tilt angle of the magnetic system module 22 is adjusted.

[0070] Therefore, the magnetic separator with adjustable magnetic field provided in the present embodiment allows the adjustment of the magnetic tilt angle. Furthermore, the magnetic tilt angle adjustment assembly 24 and the magnetic field radial adjustment assembly 23 are not arranged separately from each other in the magnetic separator with adjustable magnetic field provided in the present embodiment; rather, at least a part of the adjusting shaft 231 is arranged in the connecting shaft 241, and the connecting piece is connected to the connecting shaft 241.Such an arrangement not only avoids mutual interference between the magnet tilt angle adjustment process and the radial adjustment process of the magnet system module, but also allows the magnet tilt angle adjustment assembly 24 and the magnetic field radial adjustment assembly 23 to both have a compact and space-saving structure and fewer components, so that the magnetic separator with adjustable magnetic field is compact, space-saving and cost-effective.

[0071] It is understood that, to facilitate the adjustment process, the connecting shaft 241, the adjusting shaft 231, and the drum 21 are arranged coaxially to each other.

[0072] Information such as the magnetic wrap angle and number of magnetic poles of various magnetic deposition assemblies can be stored in the data processor 95. An angle sensor for the magnetic tilt angle can be provided on a support foot of the drum 21, configured to determine the pivot angle of the connecting shaft 241. There is a corresponding relationship between the rotation angle of the connecting shaft 241 and the pivot angle of the magnetic system module 22, and the pivot angle of the magnetic system module 22 determines the magnetic tilt angle of the magnetic system module 22. Therefore, the magnetic tilt angle of the magnetic system module 22 can be derived from the rotation angle of the connecting shaft 241.This allows both the magnetic field shape and the magnetic field strength of the magnetic separator to be visibly adjusted, and the complicated conversion of the magnetic field coefficients is replaced by simple adjustment of the magnetic system module 22 and the magnetic field parameters. It should be noted that the above information serves only as an example and that other methods can also be used for implementation, which will not be discussed further here.

[0073] Based on the above embodiments, the connecting piece can be a connecting block, wherein a sliding hole is provided on a wall of the connecting block that is located in the radial direction of the drum 21 (this wall intersects the radial direction of the drum 21), and a connecting hole communicating with the sliding hole is provided on a wall of the connecting block that is located in the axial direction of the drum 21. The magnetic pole slider 234 is arranged in an inverted L-shape. One part of the magnetic pole slider 234 is arranged to slide in the sliding hole, while the other part protrudes from the sliding hole. A sliding tooth is provided on a wall of the magnetic pole slider 234 that is located in the axial direction of the drum 21, and the sliding tooth protrudes from the connecting hole and communicates with the spiral groove 233. Furthermore, the stroke distance of the magnetic system module 22 depends on the distance traveled, or...Rotation angle in the spiral groove. The tracks also allow adjustment of the gap between the magnetic pole units 221 when setting the stroke distance of the magnetic system module, thereby changing the distribution of magnetic parameters in the sorting chamber and increasing the types of minerals that can be separated by the magnetic separator.

[0074] As an optional solution, the connector includes, as shown in Fig. 2 and Fig. Figure 3 shows a first housing 237 and a second housing 238, which are butt-jointed, with a mounting chamber formed between the first housing 237 and the second housing 238; the track plate 232 is arranged in the mounting chamber, and part of the magnetic system slide 93 is also arranged in the mounting chamber, i.e., the sliding tooth is connected to the spiral groove 233 in the mounting chamber; the second housing 238 is provided with a sliding hole; one side wall of the sliding hole and the other side wall of the mounting pole slide 234 are provided with a cam and the other with a guide rail (in detail, it may be the case that a cam is arranged on the side wall of the sliding hole and a guide rail is provided on the magnetic pole slide 234, or vice versa).Such an arrangement allows the sliding movement of the magnetic pole slider 234 to be guided, so that the movement of the magnetic pole slider 234 is smoother.

[0075] As in Fig. As shown in Figure 2, the connecting shaft 241 can comprise a first shaft section and a second shaft section, which are spaced apart from each other along the axial direction, with the first housing 237 being rigidly connected to the first shaft section, and the second housing 238 being rigidly connected to the second shaft section. The gap between them exposes part of the adjusting shaft 231, and the track plate 232 is connected to the adjusting shaft 231 at the gap.

[0076] In the present embodiment, the rotation of the drive rod 242 can be manually controlled, so that the connecting shaft 241 is also rotated. When the magnetic tilt angle of the magnet system module 22 is set to a desired position, the connecting shaft 241 is fixed in its current position by means of the positioning element 244, thereby maintaining the current magnetic tilt angle.

[0077] The positioning element 244 can comprise a telescopic rod and several adjusting holes arranged at intervals along the longitudinal direction of the drive rod 242, wherein the telescopic rod comprises a mounting section arranged on the mounting frame 243 and a telescopic section connected to the mounting frame 243 by means of a threaded connection, the end of the telescopic section facing away from the mounting section being connectable to an adjusting hole by means of a fastening element. Of course, this can also be achieved by other technical means.

[0078] Optionally, the mounting frame 243 can include an indicator panel, and the indicator panel is provided with a symbol indicating the rotation angle of the drive rod 242. Alternatively, it is directly converted into the setting angle of the magnetic tilt angle of the magnetic system module 22, thus making it easier for the user to understand the setting amount.

[0079] The connecting shaft 241 can also be driven by an electric motor, a gas cylinder, or an oil cylinder, etc., which not only makes the driving effect possible, but also allows the connecting shaft 241 to be fixed in the current position.

[0080] Furthermore, based on the above embodiments, the drum 21 can further comprise a drum body flange 212 and a drum body 211, wherein the drum body is open at both ends, and wherein the two ends of the drum body 211 are each provided with a drum body flange 212, as shown in Fig. 1 and Fig. Figure 2 shows the magnetic separator with adjustable magnetic field. It further comprises a geared motor 20, a drive shaft 30, a drive bearing block 40, and an adjustment bearing block 60. The drive bearing block 40, the adjustment bearing block 60, and the geared motor 20 are all fixed relative to the drum support frame 1. The drive shaft 30 is connected to the geared motor 20 for drive purposes, and the drive shaft 30 passes through the drive bearing block 40 and is connected to the proximal drum body flange 212 for drive purposes, in order to cause the rotation of the drum body flange 212 and thus of the entire drum 21. The two drum body flanges 212 are each rotatably connected to the connecting shaft 241 by a drum body rotation bearing block 50.The connecting shaft 241 and the adjusting shaft 231 both pass through the adjusting bearing block 60, the adjusting bearing block 60 supports the connecting shaft 241 and the adjusting shaft 231, and the connecting shaft 241 and the adjusting shaft 231 pass through the two drum body rotation bearing blocks 50 and can thus be supported.

[0081] Based on the above embodiments, the actuating shaft 231 can be driven by an electric motor, a gas cylinder, or an oil cylinder, etc., which not only makes the driving effect possible, but also allows the actuating shaft 231 to be fixed in the current position.

[0082] As an optional solution, the magnetic field radial adjustment assembly 23 further includes, as shown in Fig. Figure 1 shows a handwheel 235, which is fixedly connected to the adjusting shaft 231 and is located outside the drum 21; and a locking piece 236, which fixes the adjusting shaft 231 in a position after the handwheel 235 has been actuated and the adjusting shaft 231 has been rotated.

[0083] In the present embodiment, the rotation of the handwheel 235 can be controlled manually, so that the adjusting shaft 231 is rotated together, which is cost-effective.

[0084] Furthermore, the magnetic separator with adjustable magnetic field, based on one of the above embodiments, also comprises a frame 5 provided with a trough body 8, as shown in Fig. 1 and Fig. 7 shown.

[0085] The magnetic separator with adjustable magnetic field further comprises a sorting chamber adjustment device 7 (which can adjust the immersion depth of the drum 21, and the immersion depth of the drum 21 is the distance between the bottom of the drum 21 and the trough bottom), which is connected to the drum device 2, and an immersion depth displacement sensor 80, which is able to determine the displacement of the bottom of the drum 21 and transmit it to the data processor 95, wherein the data processor 95 determines the position information of the bottom of the drum 21 according to the displacement and transmits it to the display device.

[0086] In the present embodiment, the adjustment process of a sorting gap can be carried out visually by detecting the position of the bottom of the drum 21 or the displacement of the bottom of the drum 21 relative to the bottom of the trough body 8 in order to determine the immersion depth of the drum 21, i.e. the gap of the sorting space.

[0087] Furthermore, the magnetic separator with adjustable magnetic field, based on one of the above embodiments, also includes a drum horizontal adjustment device 6, which is connected to the sorting chamber adjustment device 7, as shown in Fig. 1 and Fig. 7 shown; under the drum horizontal adjustment device 6 and the sorting space adjustment device 7, one is connected between the frame 5 and the drum support frame 1, while the other is connected to the drum device 2.

[0088] Optionally, a horizontal displacement sensor can be provided to detect the horizontal displacement of the drum device 2.

[0089] As in Fig. 8 and Fig. As shown in Figure 9, in the lateral direction of the frame 5, both sides of the trough body 8 are each provided with an outlet for magnetic ores 82, allowing the drum 21 to be operated counterclockwise or clockwise, i.e., the trough body 8 is a trough body capable of direct or countercurrent operation. The following configurations are possible: the magnetic pole slider 234 is connected to various magnetic pole units 221, the magnetic system module 22, consisting of several magnetic pole units 221, being arranged centrally symmetrically, and bidirectional operation is achieved by adjusting the magnetic tilt angle of the magnetic system module 22. For example, an ore inlet is located in the Fig. 8 and Fig. In the orientation shown in Figure 9 (for illustrative purposes only, rather than as a limitation), the magnetic ore 82 is arranged on the left side, with an outlet for magnetic ores 82 on both the left and right sides. During direct current operation (the drum 21 rotates clockwise), the center of the magnetic system module 22 can be steered to the left relative to the center of the drum 21 by means of the magnetic tilt angle adjustment assembly 24. During countercurrent operation (the drum 21 rotates counterclockwise), the center of the magnetic system module 22 can be steered to the right relative to the center of the drum 21 by means of the magnetic tilt angle adjustment assembly 24. This enables double-acting ore processing in direct current or countercurrent operation, whereby the internal mechanics and the magnetic system module 22 are not affected by the magnetic tilt angle adjustment assembly 24.The overall design is simple, allowing the double-acting ore processing unit to be switched between counter-current and co-current directions simply by adjusting the magnetic tilt angle. Combined with the settings for the magnetic field shape, magnetic field strength, and sorting space, this essentially covers the entire process of magnetic ore sample separation.

[0090] It is also conceivable that a special magnet system module 22 can be specifically provided for operation in direct current or counter-current direction.

[0091] As in Fig.As shown in Figure 7, the magnetic separator with adjustable magnetic field, based on the embodiments above, further comprises a position indicator panel 10, which is connected to the part of the connecting shaft 241 located outside the drum 21; the position indicator panel 10 is used to display the bottom contour of the drum 21 and the position of the magnetic system module 22, as well as to display the dimensions of the sorting space formed by the current position of the drum 21 and the bottom of the counter-current or co-current double-acting trough body; and the position indicator panel 10 rotates together with the rotating connecting shaft 241, thereby displaying information about the magnetic tilt angle and the magnetic wrap angle.

[0092] In the present embodiment, the position indicator panel 10 moves depending on the position of the drum 21, allowing the gap between the bottom of the trough body 8 and the position indicator panel 10 to be directly observed, and the position information about the magnetic system module 22 can also be intuitively displayed on the position indicator panel 10. The position indicator panel 10 moves together with the magnetic tilt angle adjustment mechanism, thus displaying not only the position information about the sorting space between the drum 21 and the bottom of the trough body 8, but also information about the magnetic tilt angle of the magnetic system module 22. This allows the magnetic field characteristics and the dimensions of the sorting space to be displayed in real time, providing more accurate data for setting up effective sorting.This adjustable magnetic separator makes it possible to visually adjust the positional relationships in the magnetic sorting space throughout the entire process in order to adapt to sorting experiments with different ore samples.

[0093] With the position indicator panel 10 in combination with the above magnetic field indicator device 9, this magnetic separator with adjustable magnetic field enables the calibration of the key values ​​of the parameters of the experimental magnetic separator by intuitive monitoring or display of the magnetic field coefficients and the sorting gap, whereby its type selection data can serve as a guideline for parameter design of the magnetic separator for diverse ore samples.

[0094] It is also conceivable to arrange an ore loading assembly 70 on the trough body 8.

[0095] The trough body 8 can also be provided with an overflow level control piece 81.

[0096] The adjustable magnetic separator provided in the present disclosure exhibits a wide range of adjustable magnetic flux density. By changing different magnetic pole modules and adjusting the magnetic field, a range from 300 Gs to 8000 Gs can be achieved. Furthermore, the parameters of the magnetic space distribution can be adjusted for multiple (e.g., four) groups of magnetic poles, and the adjustment process is bidirectionally visible throughout. This ensures ease of use during the adjustment process. Under the same magnetic pole module, the parameter adjustment of the magnetic field can be performed using a structure in the form of a rotating shaft.

[0097] In some embodiments of the present disclosure, an adjustment range of the magnetic flux density from 1000Gs to 4300Gs is achievable, wherein the adjustment stroke is 20 mm, the effective sorting space spacing is 15 mm to 30 mm, and the specific usage sequence is as follows: (1) Determining a preliminary parameter range of the magnetic field for sorting by an ore sample test and selecting a suitable magnetic system module 22 with which the distribution of the setting range of this ore sample can be achieved, and adjusting from low to high after a minimum in the adjustable range has been established. (2) Adjusting the sorting space spacing, whereby the initial sorting space should be set low for weakly magnetic minerals and high for strongly magnetic minerals, and selecting the optimal sorting space step by step. (3) Selecting a low output speed and fine-tuning the magnetic angle to match the speed. (4) Switching on the magnetic separator, starting the separation operation and analyzing based on the content and composition of the ore concentrate and tailings at regular intervals and determining the subsequent setting procedure, whereby the magnetic field strength is gradually increased with respect to different ore samples up to a certain value and the value displayed on the data plate or digital screen is directly observed manually during the setting procedure. (5) Setting the corresponding relationship between the sorting chamber and the magnetic field strength; setting the corresponding relationship between the rotational speed of the magnetic separator and the magnetic field strength according to the non-linearly increasing principle; investigating the magnetic field strength at optimal ore processing efficiency and recording the parameters at that time, i.e. the essential magnetic inclination angle, the position of the sorting chamber, the rotational speed, the magnetic field strength and the attraction coefficient, in order to provide guidance for subsequent design or type selection of the production plant. (6) When switching between direct current and reverse current operation, decide whether the magnetic pole module needs to be changed and repeat step 1 if yes. (7) Adjusting the initial position of the magnetic tilt angle and repeating steps 2, 3, 4 and 5. (8) Clean and switch off the magnetic separator to complete operation.

[0098] A test machine for the magnetic separator with adjustable magnetic field provided in the embodiments of the disclosure has already been completed and the pilot production of the test machine is also being completed.

[0099] Finally, it must be explained that the above respective embodiments serve only to illustrate the technical solutions of the present disclosure, rather than to limit them. Although this disclosure has been illustrated in detail with reference to the preceding respective embodiments, the person skilled in the art should understand that the technical solutions described in the preceding respective embodiments could still be modified, or partial or all of their technical features could be substituted with equivalent ones, while such modifications or substitutions would not cause any deviation in the nature of the corresponding technical solutions from the scope of the technical solutions of the respective embodiments of this disclosure. A large number of specific details are illustrated in the description provided here.However, it can be understood that the embodiments of this disclosure can be implemented without these specific details. In some examples, generally known methods, structures, and technologies are not specifically shown, so that the understanding of the present description is not obscured. Furthermore, it should be understood by those skilled in the art that a combination of features from different embodiments falls within the scope of this disclosure and constitutes different embodiments, although some embodiments described herein include certain features contained in other embodiments instead of other features. Commercial applicability

[0100] With the magnetic separator with adjustable magnetic field according to the present disclosure, the shape and strength of the magnetic field are adjustable, and by adjusting the characteristics of the magnetic field, bidirectional operation in direct current or counter-current and real-time display of the sorting area are achieved. The magnetic separator with adjustable magnetic field in the present disclosure can be used in the field of mining facilities. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 202061704U

[0006] CN 201505573U

[0006] CN 210121527U

[0007] CN 201978813U

[0008] CN 116328941B

[0009] US 2013 / 0240413

[0010] US 8196751B2

[0011]

Claims

Magnetic separator with adjustable magnetic field, characterized in that the magnetic separator comprises: a drum device (2) with which the magnetic field strength is adjustable, wherein the drum device (2) comprises a drum (21), a magnetic system module (22) arranged in the drum (22), and a magnetic field radial adjustment assembly (23) connected to the magnetic system module (22) to control the lifting orto cause the magnetic system module to sink along the radial direction of the drum (21) and thus adjust the magnetic field strength, and that the magnetic separator with adjustable magnetic field further comprises: a magnetic field indicator device (9) comprising a driver and a display module located outside the drum (21), wherein the driver is connected to the magnetic field radial adjustment assembly (23) to follow the movement of the magnetic field radial adjustment assembly (23) so that a corresponding relationship is generated between the position of the driver and the position of the magnetic system module (22), and wherein the display module contains magnetic field data corresponding to different positions of the driver and including the magnetic field strength, and the display module is able to indicate the current magnetic field data according to the current position of the driver. Magnetic separator with adjustable magnetic field according to claim 1, characterized in that the magnetic field radial adjustment assembly (23) comprises: an adjusting shaft (231), wherein a part of the adjusting shaft (231) is located in the drum (21), while the other part is located outside the drum (21); a radial adjusting element connected to the magnetic system module (22); and a conversion structure capable of converting the rotation of the adjusting shaft (231) into a linear movement of the radial adjusting element along the radial direction of the drum (21), wherein the driver is arranged on the part of the adjusting shaft (231) located outside the drum (21) to follow the movement of the adjusting shaft (231). Magnetic separator with adjustable magnetic field according to claim 2, characterized in that the magnetic field radial adjustment assembly further comprises a connecting piece which is arranged in the drum (21) and can be fixed relative to the adjusting shaft (231), and on which a sliding hole is provided, the radial adjusting piece is a magnetic pole disc (234) and is arranged to slide along the sliding hole; the conversion structure comprises a track plate (232), a spiral groove (233) which is arranged on the track plate (232), and a sliding tooth which is arranged on the magnetic pole disc (234), wherein the track plate (232) is in fixed connection with the adjusting shaft (231) and the sliding tooth is movable along the spiral groove (233). Magnetic separator with adjustable magnetic field according to claim 2, characterized in that the drum device (2) is able to adjust the shape of the magnetic field; the magnetic system module (22) comprises a plurality of magnetic pole units (221) arranged one after the other along the circumferential direction of the drum (21), each of the magnetic pole units (221) comprising a plurality of magnetic pole modules arranged one after the other along the axial direction of the drum (21); a plurality of radial adjusters is present, wherein the plurality of magnetic pole units (221) is detachably connected to the plurality of radial adjusters in a unique manner, and the shape of the magnetic field is adjustable by connecting the radial adjuster to another of the magnetic pole units (221). Magnetic separator with adjustable magnetic field according to claim 4, characterized in that the driver comprises a rotating element which is attached to the part of the adjusting shaft (231) located outside the drum (21); and / or the driver comprises a slide (93) which is arranged on the part of the adjusting shaft (231) located outside the drum (21) by means of a threaded connection; and the magnetic field indicator device (9) further comprises a mounting base (91) which is arranged in a fixed position and is provided with a sliding limiting structure, wherein the slide (93) is slidably movable along the axial direction of the adjusting shaft (231) subject to the restriction of the sliding limiting structure. Magnetic separator with adjustable magnetic field according to claim 5, characterized in that the display module comprises a pointer and a magnetic field data plate (97), wherein the magnetic field data are specified on the magnetic field data plate (97); and the pointer is fixedly connected to the driver, wherein the pointer is able to follow the movement of the driver in order to indicate the current magnetic field data of the magnetic field data plate (97) according to the current position of the driver. Magnetic separator with adjustable magnetic field according to claim 5, characterized in that the display module comprises: a position sensing element (94) for sensing the current position of the driver; a data processor (95) wherein the position sensing element (94) is in communication connection with the data processor (95) and the magnetic field data are stored in the data processor (95); and a display device wherein the data processor (95) is able to process data of the position information of the driver and transmit the current magnetic field data obtained thereby to the display device, wherein the display device comprises a screen (96) that is able to display the current magnetic field data. Magnetic separator with adjustable magnetic field according to claim 7, characterized in that the magnetic field data further includes the shape of the magnetic field, the respective magnetic parameters and magnetic parameter curves of the plurality of the magnetic pole units (221); the screen (96) comprises a plurality of display areas to display at least the magnetic field strength, the shape of the magnetic field, the respective magnetic parameters of the plurality of the magnetic pole units (221), and the respective magnetic parameter curves of the plurality of the magnetic pole units (221). Magnetic separator with adjustable magnetic field according to claim 7, characterized in that the magnetic separator with adjustable magnetic field further comprises: a sorting chamber adjustment device (7) connected to the drum device (2), and an immersion depth displacement sensor (80) capable of detecting the displacement of the bottom of the drum (21) and transmitting it to the data processor (95), wherein the data processor (95) determines the position information of the bottom of the drum (21) according to the displacement and transmits it to the display device;and / or the drum device (2) further comprises: a magnetic tilt angle adjustment assembly (24) comprising a connecting shaft (241) connected to the magnetic system module (22), wherein a part of the connecting shaft (241) is located outside the drum (21) while another part is located inside the drum (21), and wherein the connecting shaft (241) is provided with a connecting hole extending along the axial direction of the connecting shaft (241) and at least a section of the adjusting shaft (231) is arranged through the connecting shaft (241); a trough body (8); and a position indicator panel (10) connected to the part of the connecting shaft (241) located outside the drum (21);wherein the position indicator panel (10) is used to display the bottom contour of the drum (21) and the position of the magnetic system module (22), as well as to display the dimensions of a sorting space formed by the current position of the drum (21) and the bottom of the trough body (8); and wherein the position indicator panel (10) rotates together with the connecting shaft (241), thereby displaying information about the magnetic tilt angle and the magnetic wrap angle. Magnetic separator with adjustable magnetic field according to claim 4, characterized in that the magnetic separator with adjustable magnetic field comprises: a trough body (8) which is a double-acting trough body in direct current or counter-current operation with a double-acting sorting function in direct current or counter-current operation; wherein the magnetic pole slider (234) is connected to various magnetic pole units (221), and the majority of the magnetic pole units (221) form the magnetic system module (22) and are arranged symmetrically about a center line, and wherein, in combination with the trough body (8) with the double-acting sorting function in direct current or counter-current operation, bidirectional operation in direct current or counter-current operation is achieved by adjusting the magnetic tilt angle of the magnetic system module (22).

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