A comprehensive magnet adjusting structure based on a double-disc magnetic coupler and application thereof

Abstract

The application belongs to the technical field of magnetic couplers, and discloses a comprehensive magnet adjusting structure based on a double-disc magnetic coupler and application thereof. The comprehensive magnet adjusting structure comprises coaxially arranged middle disc components, a pair of permanent magnet disc components and a pair of conductor disc components. The pair of permanent magnet disc components are symmetrically arranged on the two sides of the middle disc components, and are respectively a first permanent magnet disc and a second permanent magnet disc. The pair of conductor disc components are symmetrically arranged on the two sides of the pair of permanent magnet disc components, and are respectively a first conductor disc and a second conductor disc. The first conductor disc and the second conductor disc are fixedly connected through conductor disc fixing members located on the radial outer side. The middle disc component comprises a non-magnetic middle disc base body and a pair of magnetic conductive material sheets. The pair of magnetic conductive material sheets are fixedly installed on the axial end faces on the two sides of the middle disc base body. The application can shorten the axial adjusting stroke while maintaining a wide speed adjusting range and high linearity.

Description

Technical Field

[0001] This invention belongs to the field of magnetic coupler technology, specifically relating to a comprehensive magnetic tuning structure based on a dual-disc magnetic coupler and its application. Background Technology

[0002] In existing technologies, magnetic coupler technology has been introduced into the transmission field. It transmits torque through an air gap, achieving non-contact transmission between the motor and the load. For example, in the field of booster pumps, traditional booster pumps typically use a structure where the motor directly drives the pump shaft through a coupling. While this rigid connection method is simple in structure, it also has significant drawbacks: First, it cannot achieve stepless speed regulation during operation, making it difficult to flexibly adjust the flow rate and head according to actual working conditions, leading to energy waste; second, at the moment of startup, the motor must withstand a huge impact load, which can easily damage the power grid and the motor itself, shortening the equipment's service life; in addition, the coupling has extremely high requirements for the alignment of the motor and pump shaft, making installation and debugging complex, and vibrations during operation are directly transmitted, causing the mechanical seal to wear easily and leading to media leakage. The application of magnetic coupler technology not only fundamentally solves the leakage problem but also has advantages such as soft start and overload protection.

[0003] While existing magnetic coupler technologies have developed techniques for speed regulation by altering the air gap through axial movement of a permanent magnet disk—for example, patent document CN103780051A discloses a double-sided speed-regulating permanent magnet coupler—speed regulation using disk-type magnetic couplers often requires a large axial displacement range to achieve sufficient torque adjustment. This results in a large overall axial dimension, sluggish dynamic response, and difficulty in achieving precise control within a compact space. Attempting to shorten the adjustment stroke limits the speed range and degrades linearity, failing to meet the demands of high-precision, high-dynamic-response industrial applications. Therefore, maintaining a wide speed range and high linearity while shortening the axial adjustment stroke remains a long-standing and unresolved technical challenge in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a comprehensive magnetic adjustment structure based on a dual-disc magnetic coupler to solve the technical problem that existing technologies struggle to maintain a wide speed range and high linearity while shortening the axial adjustment stroke.

[0005] The aforementioned integrated magnetic adjustment structure based on a dual-disc magnetic coupler includes a coaxially arranged intermediate disk assembly, a pair of permanent disk assemblies, and a pair of conductor disk assemblies. The pair of permanent disk assemblies are symmetrically arranged on both sides of the intermediate disk assembly, namely a first permanent disk and a second permanent disk. The pair of conductor disk assemblies are symmetrically arranged on both sides of the pair of permanent disk assemblies, namely a first conductor disk and a second conductor disk. The first and second conductor disks are connected and fixed by conductor disk fixing members located on the radially outer side. The intermediate disk assembly includes a non-magnetic intermediate disk base and a pair of magnetically conductive material sheets. The pair of magnetically conductive material sheets are respectively fixedly installed on the axial end faces on both sides of the intermediate disk base. Among them, there are equal and variable magnetic circuit shunt gaps between the first permanent disk and the first high-permeability magnetic sheet, and between the second permanent disk and the second high-permeability magnetic sheet. There are equal and variable working air gaps between the first permanent disk and the first conductor disk, and between the second permanent disk and the second conductor disk. The intermediate disk assembly is provided with a synchronization mechanism that simultaneously connects the pair of permanent disk assemblies. The synchronization mechanism drives the pair of permanent disk assemblies to move synchronously and symmetrically axially relative to the intermediate disk assembly through transmission.

[0006] Preferably, the magnetic circuit shunt gap and the working air gap satisfy δ+g=C within the adjustment stroke range, where δ is the working air gap, g represents the magnetic circuit shunt gap, and C is the total axial spacing defined by the mechanical structure. The high-permeability material sheet 5033 is arranged in a manner not less than the coverage area of ​​the permanent magnet poles to completely receive the magnetic flux entering through the shunt air gap. In the first-order magnetic circuit estimation, the effective cross-sectional area of ​​the high-permeability material sheet 5033 is approximately considered to be equal to the effective area of ​​the shunt air gap. The algorithm for the total axial spacing is as follows: , Indicates the effective area of ​​the split air gap. The relative interaction between the shunt magnetic circuit and the working magnetic circuit can be represented by the permeability ratio, calculated as follows:

[0007] Indicates the effective magnetic flux area of ​​the working air gap. This indicates the equivalent magnetic path length within a sheet of high-permeability material. This indicates the relative permeability of a high-permeability material sheet.

[0008] Preferably, when the air gap adjustment mechanism drives the permanent disk to move, the initial values ​​of the working air gap δ and the diversion gap g satisfy δ = (1.5 ~ 2.5) × g.

[0009] Preferably, the high permeability material sheet is made of a material with a relative permeability μr ≥ 5000 and a coercivity Hc ≤ 10 A / m; an insulating layer with a thickness of 0.2 mm to 1 mm is provided between the high permeability material sheet and the intermediate disk substrate.

[0010] Preferably, the high magnetic permeability material sheet is formed by stacking silicon steel sheets with a thickness of 0.35mm to 0.5mm, and the outer edge of the high magnetic permeability material sheet is chamfered by 15° to 60°.

[0011] Preferably, the conductor disk fixing member has an encapsulation structure, which covers the outside of a pair of conductor disk assemblies and fixes the first conductor disk and the second conductor disk together. The conductor disk fixing member is provided with an adjustment mechanism for adjusting the gap of one side of the permanent disk assembly.

[0012] Preferably, the conductor disk fixing member has a guide groove arranged along the axial direction on its side. The gap adjustment mechanism includes a gap adjustment block slidably disposed in the guide groove. The gap adjustment block is provided with a clamping rod extending into the conductor disk fixing member. The clamping rods are arranged in pairs and clamped at the outer edges of the corresponding permanent disk assembly on both sides. The gap adjustment block is installed at the output end of the lead screw mechanism, which is driven by the gap adjustment motor.

[0013] The present invention also provides a dual-disc magnetic coupler, comprising the integrated magnetic adjustment structure, input shaft, coupler cover and output shaft as described above, wherein the input shaft is fixedly installed at the axis of one conductor disk assembly, and the output shaft extends from the axis into the integrated magnetic adjustment structure and is fixedly connected to a pair of permanent disk assemblies, wherein the integrated magnetic adjustment structure is disposed inside the coupler cover.

[0014] Preferably, the adjusting gear set is mounted on the coupler cover, and the adjusting motor is fixedly mounted on the coupler cover or on an external support structure that is stationary relative to the coupler cover. The adjusting gear set includes a drive gear directly mounted on the output shaft of the adjusting motor, a pair of internal gears, and a transmission gear. The transmission gear is annular and has teeth on both its inner and outer sides to form corresponding internal and external gear rings. The external gear ring of the transmission gear meshes with the drive gear, and the internal gear ring of the transmission gear meshes with the pair of internal gears. Each pair of internal gears corresponds to a set of lead screw mechanisms. The two sets of lead screw mechanisms are symmetrically arranged at the same end of the conductor disk fixing member. Internal gear one and internal gear two are respectively sleeved on the lead screw nuts of the corresponding lead screw mechanisms. The output end of the lead screw in the lead screw mechanism extends into the guide groove and is fixedly connected to the end face of the adjusting block.

[0015] Preferably, the input shaft and output shaft of the integrated magnetic adjustment structure are respectively connected to the output end of the input motor and the input end of the booster pump.

[0016] The technical advantages of this invention are as follows: The adjustable gap structure of this invention introduces a high-permeability magnetic material sheet, which can effectively change the magnetic circuit distribution during speed regulation. Specifically, the high-permeability magnetic material sheet attracts and gathers the magnetic lines of force generated by the permanent magnet disk, causing some of the magnetic lines of force that should have entered the conductor disk to enter the high-permeability magnetic material sheet. As the permanent magnet disk moves axially away from the conductor disk, the working air gap increases, while the gap between the permanent magnet disk and the high-permeability magnetic material sheet decreases, allowing more magnetic lines of force to be attracted. Through this synergistic effect of the working air gap and the high-permeability magnetic material sheet, the speed regulation process is completed within a shorter displacement, shortening the overall speed regulation stroke and dynamic response time. This structure not only makes the stepless speed regulation process more stable and reliable, but also optimizes the magnetic circuit efficiency, thereby improving the operational stability and energy efficiency of the booster pump. Furthermore, the overall structure is simple and easy to implement. Therefore, this invention can maintain a wide speed regulation range and high linearity while shortening the axial adjustment stroke.

[0017] The present invention also provides an algorithm for the total axial spacing, which determines the relationship between the properties of the high permeability material sheet, the macroscopic dimensions of the magnetic adjustment structure, and the magnetic adjustment effect. Based on this algorithm, the relationship between the properties of the high permeability material sheet and the size requirements of the magnetic adjustment structure can be determined, thereby determining which high permeability material sheet and the size of the magnetic adjustment structure to use, so as to solve the specific axial size limitations of the whole machine.

[0018] Furthermore, the dual-disc structure of this invention (two conductor disks and two permanent disks arranged symmetrically) improves torque transmission capability and power density, meeting the application requirements of high-power booster pumps. The symmetrical design balances axial forces, reducing the burden on bearings and support structures, resulting in smoother and more reliable operation. The synchronization mechanism ensures the synchronous and symmetrical movement of the two permanent disks, avoiding vibration and noise problems caused by uneven air gaps. The air gap adjustment mechanism (such as a lead screw and adjustment block) is simple and reliable in design, enabling precise control of the air gap, improving speed regulation linearity and control accuracy; and since the lead screw is independently connected to the drive motor, stepless speed regulation during operation is possible. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the application of a comprehensive magnetization structure based on a dual-disc magnetic coupler according to the present invention. Figure 2 A cross-sectional view of the dual-disc magnetic coupler of the present invention; Figure 3 for Figure 2 The diagram shows a cross-sectional view of a comprehensive magnetization structure based on a dual-disc magnetic coupler according to the present invention. Figure 4 This is a schematic diagram of the structure of the present invention when the working air gap is at its minimum; Figure 5 This is a schematic diagram of the structure of the present invention when the working air gap is at its maximum. Figure 6This is a diagram showing the magnetic field lines when the working air gap is at its smallest. Figure 7 This is a diagram showing the magnetic field lines when the working air gap is at its maximum. Figure 8 This is a partial cross-sectional view of the intermediate disk and the synchronizing gear in this invention. Figure 9 This is a schematic diagram of the permanent magnet disk and rack structure in this invention; Figure 10 This is a schematic diagram of the gap adjustment device in this invention; Figure 11 This is a simplified diagram of the adjusting gear set in this invention; Figure 12 This is a schematic diagram of the permanent magnet disk structure in this invention, in which the permanent magnets are arranged with an N-S pole gap. Figure 13 This is a schematic diagram of the permanent magnet disk structure in this invention, in which the permanent magnets are arranged in a Halbach array. Figure 14 This is a schematic diagram of the structure of the conductor disk in this invention, which is a solid copper disk; Figure 15 This is a schematic diagram of the structure of the conductor disk being a slotted copper disk in this invention; Figure 16 This is a schematic diagram illustrating the application of the grinding machine cutting fluid recovery system of the present invention.

[0020] The labels in the attached diagram include: 1-Input motor, 2-Input shaft, 3-Coupler cover, 4-Conductor disk fixing component, 401-Adjusting block, 402-Lead screw, 403-Clamping rod, 5-Integrated magnet adjustment structure, 501-Conductor disk assembly, 5011-First yoke disk, 5012-First conductor disk, 502-First permanent magnet disk, 5021-Permanent magnet, 5022-Second yoke disk, 503-Intermediate disk assembly, 5031-Rack, 5032-Synchronous gear, 5033-High permeability material sheet, 504-Second permanent magnet disk, 5041-Second yoke disk, 5042-Permanent magnet, 505-Conductor disk assembly, 5051-Second conductor disk, 5052-First yoke disk, 6-Output shaft, 7-Adjusting gear set, 701-Internal gear, 702-Transmission gear, 703-Drive gear, 8-Adjusting motor, 9-Lifting pump. Detailed Implementation

[0021] The following detailed description of the embodiments, with reference to the accompanying drawings, will further illustrate the specific implementation of the present invention, in order to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of the present invention.

[0022] like Figures 1-9As shown, the present invention provides a comprehensive magnetic tuning structure based on a dual-disk magnetic coupler, including a coaxially arranged intermediate disk assembly 503, a pair of permanent disk assemblies, and a pair of conductor disk assemblies 501 and 505. The pair of permanent disk assemblies are symmetrically arranged on both sides of the intermediate disk assembly 503, namely a first permanent disk 502 and a second permanent disk 504. The pair of conductor disk assemblies 501 and 505 are symmetrically arranged on both sides of the pair of permanent disk assemblies, namely a first conductor disk 5012 and a second conductor disk 5051. The first conductor disk 5012 and the second conductor disk 5051 are connected and fixed by a conductor disk fixing member 4 located on the radially outer side. The intermediate disk assembly 503 includes a non-magnetic intermediate disk substrate and a pair of magnetic materials. A pair of magnetically conductive material sheets 5033 (first high-permeability sheet and second high-permeability sheet) are fixedly installed on the axial end faces of both sides of the intermediate disk base. A magnetic circuit shunt gap of equal and variable size is formed between the first permanent magnetic disk 502 and the first high-permeability sheet, and between the second permanent magnetic disk 504 and the second high-permeability sheet. A working air gap of equal and variable size is formed between the first permanent magnetic disk 502 and the first conductor disk 5012, and between the second permanent magnetic disk 504 and the second conductor disk 5051. The intermediate disk assembly 503 is provided with a synchronization mechanism that simultaneously connects a pair of permanent magnetic disk assemblies. The synchronization mechanism drives the pair of permanent magnetic disk assemblies to move synchronously and symmetrically axially relative to the intermediate disk assembly 503 through transmission.

[0023] like Figure 3 As shown, the magnetic circuit shunt gap formed between the first permanent magnet disk 502 and the first high-permeability magnetic sheet is g, and the magnetic circuit shunt gap formed between the second permanent magnet disk 504 and the second high-permeability magnetic sheet is g', and g=g'; the working air gap formed between the first permanent magnet disk 502 and the first conductor disk 5012 is δ, and the working air gap formed between the second permanent magnet disk 504 and the second conductor disk 5051 is δ', and δ=δ'. The synchronization mechanism drives a pair of permanent magnet disk assemblies to move synchronously axially, resulting in an inverse linkage between the thickness of the working air gap (δ, δ') and the corresponding magnetic circuit shunt gap (g, g'), thereby achieving comprehensive adjustment of the effective magnetic flux density passing through the conductor disk.

[0024] Within the adjustable stroke range, δ and g satisfy δ+g=C. For the same dual-disc magnetic coupler, C is the total axial spacing limited by the mechanical structure.

[0025] The total axial spacing must meet the following requirements: First, constraints are applied based on geometric conditions, and the following expression needs to be satisfied:

[0026]

[0027] We can then obtain:

[0028] The meanings of the parameter symbols are as follows: L: Fixed axial distance between the effective working surface of the conductor disk and the effective shunting surface of the high-permeability material sheet; t m The effective thickness of the permanent disk assembly in the axial direction; The working air gap between the permanent magnet disk and the conductor disk; g: Magnetic circuit shunt gap between the permanent magnet and the high-permeability material sheet; C: Total axial spacing.

[0029] This invention introduces a magnetic circuit relationship, then the magnetic reluctance of the working air gap is:

[0030] The reluctance of the shunt magnetic circuit is:

[0031] The meanings of the parameter symbols are as follows: : Effective magnetic flux area of ​​the working air gap; : Effective area of ​​the split air gap; Effective cross-sectional area of ​​high-permeability magnetic material sheet; Relative permeability of high-permeability material sheets; : Equivalent magnetic circuit length within a sheet of high-permeability material; Vacuum permeability.

[0032] The relative interaction between the shunt magnetic circuit and the working magnetic circuit can be expressed by the permeability ratio. express:

[0033] in

[0034]

[0035] Substituting equations (4), (5), (7), and (8) into equation (6), we obtain the relative permeability ratio available for the interaction. The calculation formula is as follows:

[0036] like Figures 4-7As shown, in this invention, the high-permeability material sheet 5033 is arranged opposite to the permanent magnet disk, and the magnetic circuit shunting mainly occurs within the axial projection area of ​​the permanent magnet disk towards the high-permeability material sheet 5033. The effective area of ​​the shunting air gap... Essentially determined by the effective projected area of ​​the permanent magnet magnetic pole region overlapping with the high-permeability magnetic material sheet 5033, while the effective magnetic cross-sectional area of ​​the high-permeability magnetic material sheet 5033... It is also mainly taken from the cross-sectional area of ​​the overlapping region that participates in magnetic flux conduction. Since the high-permeability material sheet 5033 is usually arranged according to the permanent magnet pole coverage area or slightly larger than this area, so that it can completely receive the magnetic flux entering from the shunt air gap, in the first-order magnetic circuit estimation, the effective cross-sectional area of ​​the high-permeability material sheet 5033 can be approximately regarded as equal to the effective area of ​​the shunt air gap, that is... ≈ We can obtain:

[0037] Furthermore, the formula for the magnetic circuit shunt gap can be obtained as follows:

[0038] Therefore, the algorithm for the total axial spacing can be further obtained as follows:

[0039] Figure 4 The diagram illustrates the outward axial movement of the permanent magnet disk: the working air gap thickness decreases accordingly, while the distance between the permanent magnet disk and the high-permeability material sheet 5033 (i.e., the shunt gap g) increases. When the speed regulation limit position is reached, the working air gap thickness is at its minimum, and the shunt gap is at its maximum. Conversely, Figure 5 The diagram shows the inward axial movement of the permanent magnet disk: the working air gap thickness increases, and the shunt gap decreases. At the other extreme position, the working air gap thickness is at its maximum, and the shunt gap is at its minimum. The magnetic field lines at these two extreme positions are shown below. Figure 6 and Figure 7 As shown. When the working air gap is at its minimum ( Figure 6 At this point, the air gap between the permanent magnet disk and the conductor disk is at its minimum, and the distance between the permanent magnet disk and the high-permeability material sheet 5033 is at its maximum. At this time, the magnetic field lines mainly form a closed loop through the conductor disk, and the high-permeability material sheet 5033 has little influence on the main magnetic circuit. As the speed regulation process progresses, the permanent magnet disk moves axially, gradually moving away from the conductor disk and approaching the high-permeability material sheet 5033. During this process, the proportion of magnetic field lines attracted by the high-permeability material sheet 5033 gradually increases, leading to a corresponding decrease in the effective magnetic flux density passing through the conductor disk. When the permanent magnet disk reaches another extreme position, i.e., when the working air gap is at its maximum and the shunt gap is at its minimum (…),… Figure 7The magnetic field lines are almost entirely absorbed by the high-permeability material sheet 5033, thus minimizing the transmission torque. By introducing the high-permeability material sheet 5033 and cooperating with the working air gap adjustment (δ+g=C), the entire speed regulation process can be completed within a shorter axial displacement, which not only shortens the speed regulation stroke but also reduces the overall axial dimension of the device. In this embodiment, when the air gap adjustment mechanism drives the permanent magnet to move, the initial values ​​of the working air gap δ and the shunt gap g satisfy δ = (1.5 ~ 2.5)×g.

[0040] The high-permeability magnetic material sheet 5033 is made of a soft magnetic material with high permeability and low coercivity, preferably a material with a relative permeability μr ≥ 5000 and a coercivity Hc ≤ 10 A / m, and more preferably a silicon steel sheet with a thickness of 0.35 mm to 0.5 mm, to reduce eddy current losses. An insulating layer with a thickness of 0.2 mm to 1 mm is provided between the high-permeability magnetic material sheet 5033 and the intermediate disk substrate. The insulating layer can be an epoxy resin coating or a polyimide film to prevent eddy currents from forming loops in the intermediate disk. The outer edge of the high-permeability magnetic material sheet 5033 is chamfered at 15° to 60° to guide a smooth transition of magnetic lines of force and avoid sudden increases in magnetic reluctance.

[0041] The permanent magnet disk assembly further includes first yoke disks 5011 and 5052, with the first permanent magnet disk 502 and the second permanent magnet disk 504 respectively mounted on the corresponding first yoke disks 5011 and 5052; the conductor disk assemblies 501 and 505 also include corresponding second yoke disks 5022 and 5041, with the first conductor disk 5012 and the second conductor disk 5051 also mounted on the corresponding second yoke disks 5022 and 5041. The intermediate disk substrate, two layers of high-permeability magnetic material sheets 5033, two sets of permanent magnet disks and the connected first yoke disks 5011 and 5052, and the two sets of conductor disks and the connected second yoke disks 5022 and 5041 are all coaxially arranged.

[0042] like Figure 10 As shown, the conductor disk fixing component 4 has an encapsulating structure, covering the outer side of a pair of conductor disk assemblies 501 and 505, and fixing the first conductor disk 5012 and the second conductor disk 5051 together. The conductor disk fixing component 4 is provided with an adjustment mechanism for adjusting the gap of one side of the permanent disk assembly. The side of the conductor disk fixing component 4 has a guide groove arranged axially. The gap adjustment mechanism includes an adjustment block 401 slidably disposed in the guide groove. The adjustment block 401 is provided with a clamping rod 403 extending into the conductor disk fixing component 4. The clamping rods are arranged in pairs and clamp the outer edges of the corresponding permanent disk assemblies on both sides. The adjustment block 401 is installed at the output end of the lead screw mechanism, which is driven by the gap adjustment motor 8. The end of the clamping rod 403 is provided with a roller.

[0043] like Figure 8, Figure 9 As shown, the synchronization mechanism includes a synchronization gear 5032 and a pair of racks 5031 meshing with the synchronization gear 5032. The pair of racks 5031 are located on both sides of the synchronization gear 5032 and extend in opposite directions. The extended ends of the pair of racks 5031 are respectively connected to the yoke plates on the first permanent disk 502 and the second permanent disk 504. The synchronization gears 5032 are rotatably mounted on the intermediate disk base, and there are at least two sets of them. The synchronization mechanism is arranged circumferentially along the intermediate disk base and is symmetrical with respect to the center of the intermediate disk base. The synchronization mechanism drives the movement of a pair of permanent disk assemblies and is used to ensure that the two remain synchronized and symmetrical during movement.

[0044] like Figures 12-15 As shown, the yoke of the permanent magnet disk has a groove along the annular axis, and the permanent magnets 5021 and 5042 are arranged on it in an alternating N-pole and S-pole gap or in a Halbach array arrangement; the conductor disk is a solid copper disk or a [missing information - likely a specific type of disk].

[0045] like Figure 1 , Figure 2 As shown, the present invention also provides an application of the above-mentioned integrated magnetic adjustment structure 5 based on a dual-disc magnetic coupler. The integrated magnetic adjustment structure 5 is applied in a dual-disc magnetic coupler, which further includes an input shaft 2, a coupler cover 3, and an output shaft 6. The input shaft 2 is fixedly installed at the axis of one side conductor disk assembly 501, 505. The output shaft 6 extends from the axis into the integrated magnetic adjustment structure 5 and is fixedly connected to a pair of permanent disk assemblies. The integrated magnetic adjustment structure 5 is located inside the coupler cover 3. Both the input shaft 2 and the output shaft 6 are rotatably connected to the coupler cover 3. The gap adjustment gear set 7 is installed on the coupler cover 3, and the gap adjustment motor 8 is fixedly installed on the coupler cover 3 or on an external support structure that is stationary relative to the coupler cover 3.

[0046] like Figure 10 , Figure 11As shown, the lead screw mechanism includes a lead screw 402 and a lead screw nut. The lead screw nut is threadedly connected to the lead screw 402. The output end of the lead screw 402 extends into the guide groove and is fixedly connected to the end face of the adjusting block 401. When the lead screw nut rotates, it drives the lead screw 402 to move axially through the threaded connection, thereby driving the adjusting block 401 and ultimately driving the permanent magnet disk assembly to move axially. The lead screw nut is connected to the adjustable motor 8 via an adjustable gear set 7. The transmission mechanism can employ the adjustable gear set 7, which includes a drive gear 703 directly mounted on the output shaft 6 of the adjustable motor 8, a pair of internal gears 701 (internal gear one and internal gear two), and a transmission gear 702. The transmission gear 702 is annular and has teeth on both its inner and outer sides, forming corresponding internal and external gear rings. The external gear ring of the transmission gear 702 meshes with the drive gear 703, and the internal gear ring of the transmission gear 702 simultaneously meshes with the pair of internal gears 701. Each pair of internal gears 701 corresponds to a lead screw mechanism, and the two sets of lead screw mechanisms are symmetrically arranged at the same end of the conductor disk fixing member 4. Internal gear one and internal gear two are respectively sleeved on the corresponding lead screw 402 nuts. In this way, through the gear transmission mechanism, one adjustable motor 8 can synchronously drive a pair of lead screw mechanisms and maintain the synchronous movement of this pair of lead screw mechanisms.

[0047] like Figure 16 As shown, the aforementioned dual-disc magnetic coupler is applied to a grinding machine cutting fluid recovery system. Besides the dual-disc magnetic coupler, it also includes an input motor 1 and a booster pump 9. The input motor 1 is preferably a YE3-90S-2 type three-phase asynchronous motor with a rated power of 1.5kW and an output speed of 2880 rpm. Its output shaft 6 is connected to drive the input shaft 2 via a key. The integrated magnetic adjustment structure 5 is the core component of this invention. Its input shaft 2 and output shaft 6 are respectively connected to the output end of the input motor 1 and the input end of the booster pump 9, transmitting the torque of the input motor 1 to the booster pump 9 without contact. The booster pump 9 is a CDLK4-120 / 8SWPC type multistage centrifugal pump with a design flow rate of 4m³ / h, a head of 64m, a rated power of 1.5kW, and an operating speed of approximately 2900 rpm.

[0048] After the input motor 11 starts, it drives the conductor disk assemblies 501 and 505 of the dual-disc magnetic coupler 5 to rotate via the input shaft 2. The magnetic field generated by the permanent magnet disk assembly cuts the first conductor disk 5012 and the second conductor disk 5051 rotating on both sides, inducing eddy currents in the conductor disks. These induced eddy currents generate their own induced magnetic field, which interacts with the original magnetic field generated by the permanent magnet disk assembly, thereby generating electromagnetic torque. This drives the permanent magnet disk assembly and the output shaft 6 connected to it to rotate together, which in turn drives the shaft at the input end of the lift pump 9 to rotate together, ultimately driving the impeller to work. The untreated cutting fluid is lifted from the sludge tank and transported to the filter box, where a vacuum fan removes moisture. The fluid is then sent to the drying area on the conveyor filter cloth for solid-liquid separation. The pre-treated liquid enters the oil-gas separator to further separate the gas and moisture in the oil. The separated oil is then sent to the clean oil tank by a suction pump to store clean cutting fluid for reuse. The separated wastewater and waste oil are introduced into the sludge tank for further processing or off-site disposal. Solid impurities are conveyed by the conveyor belt to the end and sent to the transport vehicle. This completes one recycling cycle.

[0049] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A comprehensive magnetization structure based on a dual-disc magnetic coupler, characterized in that: The device includes a coaxially arranged intermediate disk assembly, a pair of permanent disk assemblies, and a pair of conductor disk assemblies. The pair of permanent disk assemblies are symmetrically arranged on both sides of the intermediate disk assembly, namely a first permanent disk and a second permanent disk. The pair of conductor disk assemblies are symmetrically arranged on both sides of the pair of permanent disk assemblies, namely a first conductor disk and a second conductor disk. The first and second conductor disks are connected and fixed by conductor disk fixing members located on the radially outer side. The intermediate disk assembly includes a non-magnetic intermediate disk base and a pair of magnetically conductive material sheets. The pair of magnetically conductive material sheets are respectively fixedly installed on the axial end faces on both sides of the intermediate disk base. Equal and variable magnetic circuit shunt gaps are formed between the first permanent disk and the first high-permeability magnetic sheet, and between the second permanent disk and the second high-permeability magnetic sheet. Equal and variable working air gaps are formed between the first permanent disk and the first conductor disk, and between the second permanent disk and the second conductor disk. The intermediate disk assembly is provided with a synchronization mechanism that simultaneously connects the pair of permanent disk assemblies. The synchronization mechanism drives the pair of permanent disk assemblies to move synchronously and symmetrically axially relative to the intermediate disk assembly through transmission.

2. The integrated magnetization structure based on a dual-disc magnetic coupler according to claim 1, characterized in that, Within the adjustable stroke range, the magnetic circuit shunt gap and the working air gap satisfy δ+g=C, where δ is the working air gap, g represents the magnetic circuit shunt gap, and C is the total axial spacing limited by the mechanical structure. The high-permeability material sheet 5033 is arranged in a manner not less than the coverage area of ​​the permanent magnet poles to completely receive the magnetic flux entering through the shunt air gap. In the first-order magnetic circuit estimation, the effective cross-sectional area of ​​the high-permeability material sheet 5033 is approximately considered to be equal to the effective area of ​​the shunt air gap. The algorithm for the total axial spacing is as follows: , Indicates the effective area of ​​the split air gap. The relative interaction between the shunt magnetic circuit and the working magnetic circuit can be represented by the permeability ratio, calculated as follows: Indicates the effective magnetic flux area of ​​the working air gap. This indicates the equivalent magnetic path length within a sheet of high-permeability material. This indicates the relative permeability of a high-permeability material sheet.

3. The integrated magnetization structure based on a dual-disc magnetic coupler according to claim 2, characterized in that, When the air gap adjustment mechanism drives the permanent disk to move, the initial values ​​of the working air gap δ and the diversion gap g satisfy δ = (1.5 ~ 2.5)×g.

4. The integrated magnetization structure based on a dual-disc magnetic coupler according to claim 1, characterized in that, The high permeability material sheet is made of a material with a relative permeability μr ≥ 5000 and a coercivity Hc ≤ 10 A / m; an insulating layer with a thickness of 0.2 mm to 1 mm is provided between the high permeability material sheet and the intermediate disk substrate.

5. The integrated magnetization structure based on a dual-disc magnetic coupler according to claim 4, characterized in that, The high magnetic permeability material sheet is formed by stacking silicon steel sheets with a thickness of 0.35mm to 0.5mm, and the outer edge of the high magnetic permeability material sheet is chamfered by 15° to 60°.

6. The integrated magnetization structure based on a dual-disc magnetic coupler according to claim 1, characterized in that, The conductor disk fixing component has an encapsulation structure. The conductor disk fixing component covers the outside of a pair of conductor disk assemblies and fixes the first conductor disk and the second conductor disk together. The conductor disk fixing component is provided with an adjustment mechanism for adjusting the gap of one side of the permanent disk assembly.

7. The integrated magnetization structure based on a dual-disc magnetic coupler according to claim 6, characterized in that, The conductor disk fixing component has a guide groove arranged along the axial direction on its side. The gap adjustment mechanism includes a gap adjustment block slidably disposed in the guide groove. The gap adjustment block is provided with a clamping rod extending into the conductor disk fixing component. The clamping rods are arranged in pairs and clamped at the outer edges of the corresponding permanent disk assembly on both sides. The gap adjustment block is installed at the output end of the lead screw mechanism, which is driven by the gap adjustment motor.

8. A dual-disc magnetic coupler, characterized in that, The device includes an integrated magnetizing structure, an input shaft, a coupler cover, and an output shaft as described in any one of claims 1-7. The input shaft is fixedly mounted at the center of a conductor disk assembly on one side, and the output shaft extends from the center into the integrated magnetizing structure and is fixedly connected to a pair of permanent disk assemblies. The integrated magnetizing structure is located inside the coupler cover.

9. A dual-disc magnetic coupler according to claim 8, characterized in that, The adjusting gear set is mounted on the coupler cover, and the adjusting motor is fixedly mounted on the coupler cover or on an external support structure that is stationary relative to the coupler cover; The adjusting gear set includes a drive gear directly mounted on the output shaft of the adjusting motor, a pair of internal gears, and a transmission gear. The transmission gear is ring-shaped and has teeth on both its inner and outer sides to form corresponding internal and external gear rings. The external gear ring of the transmission gear meshes with the drive gear for transmission, and the internal gear ring of the transmission gear meshes with the pair of internal gears for transmission. Each pair of internal gears corresponds to a set of lead screw mechanisms. The two sets of lead screw mechanisms are symmetrically arranged at the same end of the conductor disk fixing member. Internal gear one and internal gear two are respectively sleeved on the lead screw nuts of the corresponding lead screw mechanisms. The output end of the lead screw in the lead screw mechanism extends into the guide groove and is fixedly connected to the end face of the adjusting block.

10. A dual-disc magnetic coupler according to claim 9, characterized in that, The input and output shafts of the integrated magnetic tuning structure are respectively connected to the output end of the input motor and the input end of the booster pump.

Images