A fluorine plastic lined permanent magnetism no-leakage magnetic force pump

Abstract

The application relates to a fluoroplastic-lined permanent-magnetic leakage-free magnetic force pump, belonging to the technical field of magnetic force pumps, which is used for solving the problems of bearing wear, fatigue loss or lubrication failure, causing the magnetic slip phenomenon of an outer magnetic rotor and an inner magnetic rotor, insufficient medium conveying flow and pressure fluctuation, and leakage and safety hidden trouble of combustion and explosion during dismounting and maintenance, and comprises a base and a first motor fixed on one side of the base, and a pump body fixedly installed on one side of the base. When the bearing wear causes the magnetic slip, the bearing structure can be switched online, the pump body does not need to be dismounted and the medium does not need to be emptied, the high-risk medium leakage, poisoning, combustion and explosion and corrosion injury risks can be fundamentally avoided, the equipment operation safety is greatly improved, the coaxiality of a shaft rod, the outer magnetic rotor and the inner magnetic rotor is quickly recovered through the synchronous radial clamping of multiple groups of positioning rotating pieces, the air gap unevenness problem caused by the bearing wear is solved, the magnetic coupling transmission stability is ensured, and the magnetic slip phenomenon is eliminated.

Description

Technical Field

[0001] This invention relates to the field of magnetic pump technology, specifically to a fluoroplastic-lined permanent magnet leak-free magnetic pump. Background Technology

[0002] Fluoroplastic-lined permanent magnet leak-free magnetic pumps achieve non-contact power transmission through magnetic coupling, eliminating the need for traditional mechanical dynamic seals. This truly achieves zero leakage during media transport, making them widely used in the petroleum, chemical, metallurgical, and pharmaceutical industries for transporting highly hazardous media such as strong acids, strong alkalis, flammable and explosive, highly toxic, volatile, and highly corrosive substances. To ensure the pump body's corrosion resistance, its flow-through components typically employ a fluoroplastic lining structure, effectively resisting the erosion of the metal casing by hazardous media and extending the equipment's service life under harsh operating conditions.

[0003] Current fluoroplastic-lined permanent magnet leak-free magnetic pumps drive the internal magnetic rotor and impeller inside the isolation sleeve through magnetic coupling to achieve continuous transportation of hazardous media. In this structure, the bearing, as a key component supporting the rotation of the external magnetic rotor, is in a state of high-speed rotation for a long time. During continuous operation, problems such as normal wear, fatigue wear, or lubrication failure will occur, which will significantly reduce the coaxiality between the external and internal magnetic rotors, causing magnetic slippage. This will result in insufficient media flow and pressure fluctuations. Furthermore, if the magnetic pump is disassembled for maintenance while transporting hazardous media, it is difficult to completely empty the hazardous media remaining in the pump chamber and flow channel. The media replacement and cleaning process is complex and prone to incompleteness. During disassembly, residual media is very likely to leak, posing a fire and explosion safety hazard.

[0004] To address the above issues, a leak-free magnetic pump with a fluoroplastic-lined permanent magnet is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a fluoroplastic-lined permanent magnet leak-free magnetic pump. By using this device, the problems of bearing wear, fatigue loss, or lubrication failure mentioned in the background are solved. These problems cause magnetic slippage between the outer and inner magnetic rotors, resulting in insufficient medium delivery flow and pressure fluctuations. Furthermore, disassembly and maintenance can easily lead to leakage and pose a fire and explosion safety hazard.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A fluoroplastic-lined permanent magnet leak-free magnetic pump includes a base and a first motor fixed to one side of the base. A pump body is also fixedly mounted to one side of the base, and the first motor is fixedly connected to one end of the pump body. A shaft is fixedly mounted to the output end of the first motor, and an outer magnetic rotor is fixedly mounted to one end of the shaft. An isolation sleeve is provided inside the outer magnetic rotor and is fixedly connected to the pump body. An impeller is rotatably connected inside the pump body, and an inner magnetic rotor is fixedly mounted to one end of the impeller. A bearing is also installed inside the pump body, and a sleeve is fixedly mounted inside the bearing. A housing is installed inside the pump body, and the housing contains... The pump body is equipped with a drive unit. Several positioning and rotating parts are slidably connected inside the housing and connected to the drive unit. An annular frame is fixedly connected inside the pump body. Several guide parts are provided on one side of the annular frame and are slidably connected to the guide parts. A limit seat is slidably connected to one side of the annular frame and is fixedly connected to the guide parts. Several insert parts are rotatably connected inside the limit seat and are slidably connected to the sleeve rod and shaft rod. A displacement sensor is installed inside the pump body, and the first motor, displacement sensor and drive unit are all electrically connected through a controller.

[0007] Furthermore, an annular ring is fixedly installed on the surface of the shaft.

[0008] Furthermore, several sets of concave plates are installed inside the housing, and the positioning rotating component is slidably connected to the concave plates.

[0009] Furthermore, the driving component includes a second motor and a bevel gear fixed at the output end of the second motor. The second motor is connected through the housing and the pump body on one side. The bevel gear is rotatably connected to the housing. A gear disk is rotatably connected inside the housing, and the bevel gear is meshed with the gear disk. A planar thread is provided on one side of the gear disk, and several positioning rotating parts are meshed with the planar thread.

[0010] Furthermore, the plurality of positioning rotating components include a chuck and an arc-shaped plate fixed to one end of the chuck. The chuck is engaged with a planar thread, and a plurality of balls are rotatably connected to one side of the planar thread. Limiting strips are fixedly installed on both sides of the chuck, and the limiting strips are slidably connected to the concave plate.

[0011] Furthermore, an extension rod is fixedly installed on one side of the claw, the extension rod is slidably connected to the guide member, and rollers are installed on both sides of the extension rod, and the rollers are tactilely connected to the guide member.

[0012] Furthermore, the annular frame includes an annular plate and several connecting plates fixed on the surface of the annular plate, the limiting seat is slidably connected to the annular plate, and the several connecting plates are all fixedly connected to the inside of the pump body.

[0013] Furthermore, the guide component includes a frame plate and a guide plate slidably connected inside the frame plate. The frame plate is fixedly connected to the annular plate and the pump body. The extension rod is slidably connected to the guide plate. Inclined grooves are opened through both sides of the guide plate. Rollers are slidably connected to the inclined grooves. Slider blocks are fixedly installed on both sides of the guide plate. Both sliders are slidably connected to the inside of the frame plate. The guide plate is fixedly connected to the limiting seat.

[0014] Furthermore, the limiting seat includes a positioning ring and three limiting blocks fixed on the surface of the positioning ring, and all three limiting blocks are slidably connected to the annular plate.

[0015] Furthermore, the insert includes a plug and a roller mounted on one end of the plug. The plug is slidably connected to the sleeve rod and the shaft rod, and the roller is rotatably connected to the positioning ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When bearing wear causes magnetic slippage, the support structure can be switched online without disassembling the pump body or draining the medium, fundamentally avoiding the risks of high-risk medium leakage, poisoning, explosion and corrosion injury, and greatly improving the safety of equipment operation.

[0017] 2. By synchronously radially clamping multiple sets of positioning rotating parts, the coaxiality of the shaft, outer magnetic rotor and inner magnetic rotor is quickly restored, solving the problem of uneven air gap caused by bearing wear, ensuring stable magnetic coupling transmission and eliminating magnetic slippage.

[0018] 3. After the bearing fails, the transmission connection between the sleeve and the shaft can be automatically cut off, so that the worn bearing no longer rotates with the shaft, avoiding further damage to the bearing, increased shaft eccentricity, and scraping of the isolation sleeve by the external magnetic rotor.

[0019] 4. The displacement sensor detects shaft vibration in real time, and the controller automatically completes the entire process of stopping, switching supports and restarting, which is suitable for unattended working conditions such as flammable, explosive and highly toxic materials.

[0020] 5. The positioning clamp and the disengagement of the insert adopt a linkage structure, so that the centering support is established and the original support is withdrawn at the same time. The action is precise and smooth, and there will be no support loss or jamming failure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the pump body structure of the present invention; Figure 3 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the drive component structure of the present invention; Figure 5 This is a schematic diagram of the positioning and rotating component structure of the present invention; Figure 6 This is a schematic diagram of the external magnetic rotor structure of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point B; Figure 8 This is a schematic diagram of the limiting seat structure of the present invention.

[0022] In the diagram: 1. Base; 2. First motor; 3. Pump body; 4. Shaft; 41. Annular ring; 5. Outer magnetic rotor; 6. Isolation sleeve; 7. Impeller; 8. Inner magnetic rotor; 9. Bearing; 10. Sleeve rod; 20. Housing; 201. Concave plate; 30. Drive component; 301. Second motor; 302. Bevel gear; 303. Gear disk; 304. Flat thread; 40. Positioning rotating component; 401. Claw; 402. Arc Shaped plate; 403, ball bearing; 404, limiting strip; 405, extension rod; 406, roller; 50, ring frame; 501, ring plate; 502, connecting plate; 60, guide component; 601, frame plate; 602, guide plate; 603, inclined groove; 604, slider; 70, limiting seat; 701, positioning ring; 702, limiting block; 80, insert; 801, insert block; 802, roller; 90, displacement sensor. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To address issues such as bearing 9 wear, fatigue loss, or lubrication failure, which cause magnetic slippage between the outer magnetic rotor 5 and the inner magnetic rotor 8, resulting in insufficient media flow and pressure fluctuations, and to prevent leakage and potential fire and explosion hazards during disassembly and repair, the following technical problems exist. Figures 1-8 As shown, the following preferred technical solutions are provided: like Figures 1-3As shown, a fluoroplastic-lined permanent magnet leak-free magnetic pump includes a base 1 and a first motor 2 fixed to one side of the base 1. A pump body 3 is also fixedly installed on one side of the base 1, and the first motor 2 is fixedly connected to one end of the pump body 3. The rigid connection between the first motor 2 and the pump body 3 is achieved through the base 1, ensuring the stability and coaxiality of the entire machine installation. Under high-speed rotation conditions, the relative displacement and vibration between the first motor 2 and the pump body 3 are effectively suppressed. A shaft 4 is fixedly installed at the output end of the first motor 2, and an outer magnetic rotor 5 is fixedly installed at one end of the shaft 4. An isolation sleeve 6 is provided inside the outer magnetic rotor 5, and the isolation sleeve 6 is fixedly connected to the pump body 3. As a key component for separation, the isolation sleeve 6 and its fixed structure with the pump body 3 achieve zero leakage and full enclosure physical isolation. It completely seals the high-risk media being transported inside the isolation sleeve 6, eliminating the possibility of media leakage through the shaft seal, and perfectly adapting to the transportation requirements of high-risk media such as strong acids, strong alkalis, and flammable and explosive media.

[0025] An impeller 7 is rotatably connected inside the pump body 3. An inner magnetic rotor 8 is fixedly installed at one end of the impeller 7. A bearing 9 is also installed inside the pump body 3. A sleeve rod 10 is fixedly installed inside the bearing 9. When the bearing 9 wears, only the sleeve rod 10 will produce gaps or vibrations. This provides the possibility for subsequent online replacement or cutting off the transmission path of the sleeve rod 10, avoiding the high-cost downtime maintenance caused by directly replacing the shaft rod 4 or the outer magnetic rotor 5. A housing 20 is installed inside the pump body 3. A drive component 30 is set inside the housing 20. Several positioning rotating components 40 are slidably connected inside the housing 20. The several positioning rotating components 40 are connected to the drive component 30. The drive component 30 connects to multiple positioning rotating components 40 at the same time, realizing the synchronous and equidistant movement of multiple positioning rotating components 40 towards the surface of the shaft rod 4. This is the key to achieving automatic centering, ensuring that the shaft rod 4 can be evenly clamped and quickly restore coaxiality. Under the push of the drive component 30, the positioning rotating components 40 can directly clamp and support the shaft rod 4.

[0026] An annular frame 50 is fixedly connected inside the pump body 3. Several guide members 60 are provided on one side of the annular frame 50, and the positioning rotating member 40 is slidably connected to the guide members 60. A limiting seat 70 is slidably connected to one side of the annular frame 50, and the limiting seat 70 is fixedly connected to the guide members 60. Several insert members 80 are rotatably connected inside the limiting seat 70, and each insert member 80 is slidably connected to the sleeve rod 10 and the shaft rod 4. The movement of the positioning rotating member 40 can synchronously drive the limiting seat 70 and the insert members 80 to move. On the one hand, the positioning rotating member 40 clamps the shaft rod 4, and on the other hand, the insert members 80 synchronously withdraw from the sleeve rod 10 and the shaft rod 4. The withdrawal design of the insert members 80 is the key to cutting off the original transmission chain. When the insert members 80 are completely disengaged, the worn bearing 9 and the sleeve rod 10 no longer rotate with the shaft rod 4, protecting the bearing 9 from further wear. The bearing 9 is damaged, and the shaft 4 is suspended in the air, waiting for the support of the positioning rotating part 40. This maintains the coaxiality of the shaft 4, the outer magnetic rotor 5, and the inner magnetic rotor 8, fundamentally solving the problem of uneven air gap in magnetic transmission caused by the wear of the bearing 9, and eliminating the risk of magnetic slippage. The pump body 3 is equipped with a displacement sensor 90, and the first motor 2, the displacement sensor 90, and the drive part 30 are all electrically connected through the controller. The displacement sensor 90 can output the displacement amplitude signal of the shaft 4 in real time. When the detected radial runout exceeds the preset safety threshold, it is determined that the wear of the bearing 9 has seriously affected the coaxiality and there is a risk of magnetic slippage. The displacement sensor 90 transmits this electrical signal to the controller (the controller is existing technology and is not shown in the figure), providing accurate and reliable triggering basis for the subsequent action of the actuator, avoiding false action or missed triggering.

[0027] Power is provided by the first motor 2 on one side of the base 1. Its output end drives the shaft 4 to rotate, and the shaft 4 drives the outer magnetic rotor 5 at the end to rotate synchronously. The outer magnetic rotor 5 drives the inner magnetic rotor 8 inside the isolation sleeve 6 to rotate through magnetic coupling, which in turn drives the impeller 7 inside the pump body 3 to rotate at high speed, realizing the continuous transportation of high-risk media. The insert 80 slides with the sleeve 10 and the shaft 4 to form a conventional transmission support structure. When the motor drives the shaft 4 to rotate, the shaft 4 can drive the sleeve 10 and the inner ring of the bearing 9 to rotate synchronously through the insert 80, ensuring the normal operation of the equipment.

[0028] When the bearing 9 wears due to long-term operation of the equipment, the shaft 4 will produce radial runout and vibration. The displacement sensor 90 inside the pump body 3 detects the radial displacement and vibration status of the shaft 4 in real time. When the displacement amplitude exceeds the set threshold, the controller sends a control signal. The system first controls the first motor 2 to pause briefly to avoid impact and increased eccentricity during the switching process. Then, the controller starts the drive component 30 inside the housing 20. The drive component 30 moves and simultaneously pushes multiple positioning rotating components 40 to move in the direction of the shaft 4 axis. The positioning rotating components 40 slide along the guide 60 on one side of the ring frame 50. Simultaneously, the limiting seat 70 moves synchronously, and the limiting seat 70 drives the internal insert 80 to move synchronously, so that the insert 80 gradually withdraws from the mating position of the sleeve 10 and the shaft 4. When the multiple positioning rotating parts 40 are all in contact with and pressed against the surface of the shaft 4, the insert 80 completely disengages from the sleeve 10 and the shaft 4. The original support transmission path formed by the bearing 9 and the sleeve 10 is cut off. At this time, the shaft 4 forms a new centering support structure by the multiple positioning rotating parts 40. The positioning rotating parts 40 constrain and rotate support the shaft 4, so that the shaft 4 and the outer magnetic rotor 5 remain coaxial with the inner magnetic rotor 8.

[0029] After the first motor 2 restarts, the shaft 4 can rotate smoothly under the support of the positioning rotating part 40, avoiding the vibration and eccentricity problems caused by the wear of the bearing 9, and avoiding magnetic slippage. This allows the equipment to continue operating without stopping or disassembling. Maintenance can only be performed after the high-risk medium has been transported. Therefore, when the wear of the bearing 9 causes vibration and magnetic slippage of the shaft 4, there is no need to disassemble the pump body 3 to drain the medium. The support structure can be switched online, avoiding safety accidents such as leakage, poisoning, explosion, and chemical corrosion injuries caused by residual high-risk media and incomplete replacement due to disassembly and maintenance. This significantly improves the equipment's performance. To ensure operational safety under conditions involving the transport of strong acids, strong alkalis, flammable and explosive, and highly toxic media, multiple sets of positioning and rotating components 40 provide radial constraint and centering support for the shaft 4, quickly restoring the coaxiality of the shaft 4, the outer magnetic rotor 5, and the inner magnetic rotor 8. This solves the problems of uneven air gap and decreased magnetic coupling torque caused by bearing 9 wear, effectively preventing magnetic slippage and ensuring magnetic transmission efficiency and equipment operational stability. After switching supports, the shaft 4 no longer drives the sleeve 10 and the worn bearing 9 to rotate, preventing further damage to the bearing 9, increased eccentricity of the shaft 4, and the outer magnetic rotor 5 scraping against the isolation sleeve 6.

[0030] like Figure 4 and Figure 7As shown, an annular ring 41 is fixedly installed on the surface of the shaft 4. The annular ring 41 can be made of a high-hardness, high-wear-resistant and self-lubricating material. The positioning rotating part 40 will eventually come into contact with the annular ring 41 to clamp, support and constrain the rotation of the shaft 4. By making the positioning rotating part 40 only contact the annular ring 41, direct friction and squeezing of the shaft 4 are avoided, preventing scratches, indentations, deformation or damage to the surface precision of the shaft 4, and ensuring the structural strength and transmission accuracy of the shaft 4.

[0031] like Figure 4 As shown, several sets of concave plates 201 are installed inside the housing 20. The positioning rotating component 40 is slidably connected to the concave plate 201. The concave plate 201 forms a fixed and regular sliding track inside the housing 20. The positioning rotating component 40 slides along the groove of the concave plate 201, which can strictly limit its movement direction to linear feed along the shaft 4, avoiding circumferential deflection, skewness or jamming of the positioning rotating component 40 during movement, and ensuring that multiple sets of positioning rotating components 40 can move synchronously and coaxially toward the center of the shaft 4, thus ensuring the centering support accuracy.

[0032] The driving component 30 includes a second motor 301 and a bevel gear 302 fixed to the output end of the second motor 301. The second motor 301 is connected through the housing 20 and the pump body 3 on one side. The bevel gear 302 is rotatably connected to the housing 20. A gear disk 303 is rotatably connected inside the housing 20, and the bevel gear 302 meshes with the gear disk 303. A planar thread 304 is provided on one side of the gear disk 303, and several positioning rotating parts 40 are meshed with the planar thread 304. Multiple positioning rotating parts 40 are simultaneously driven by the planar thread 304 on a single gear disk 303, ensuring that multiple positioning rotating parts 40 are fed simultaneously, move at equal distances, and are uniformly centered, without any asynchronous problems. The output end of the second motor 301 drives the bevel gear 302 to rotate. The bevel gear 302 meshes with the gear disk 303, transmitting power to the gear disk 303, driving the gear disk 303 to rotate circumferentially around the axis of the shaft 4 inside the housing 20.

[0033] The planar thread 304 engages with multiple positioning rotating parts 40 simultaneously. As the gear disk 303 rotates, the planar thread 304 drives the multiple positioning rotating parts 40 to feed synchronously and equidistantly toward the center of the shaft 4, ultimately achieving centering and clamping of the annular ring 41 on the shaft 4. When reset is required, the second motor 301 rotates in the opposite direction, which can drive the positioning rotating parts 40 to open synchronously through the planar thread 304, releasing the support.

[0034] like Figure 5 and Figure 7As shown, several positioning and rotating components 40 include chucks 401 and arc-shaped plates 402 fixed to one end of the chucks 401. The chucks 401 are engaged with the planar thread 304, and the chucks 401 are directly engaged with the planar thread 304 of the gear disk 303. The transmission is reliable and slip-free, and the rotational motion can be accurately converted into radial linear motion. This ensures that multiple sets of chucks 401 are fed synchronously, achieving rapid centering of the shaft 4 and effectively avoiding secondary eccentricity caused by asynchronous feeding. It ensures that the outer magnetic rotor 5 and the inner magnetic rotor 8 always remain coaxial, preventing magnetic slippage at the source. Several balls 403 are rotatably connected to one side of the planar thread 304, and limit strips 40 are fixedly installed on both sides of the chucks 401. 4. The limiting strip 404 is slidably connected to the concave plate 201. The limiting strip 404 on both sides of the chuck 401 forms a sliding limiting constraint with the concave plate 201, which strictly limits the chuck 401 to only move in a radial straight line, preventing the chuck 401 from circumferentially deflecting, tilting or jamming during feeding or rotational support. Several balls 403 on the inner side of the arc plate 402 convert the sliding friction between the balls 403 and the ring 41 into rolling friction, which greatly reduces frictional resistance and frictional heat generation. When the shaft 4 rotates at high speed, it can ensure smooth rotation, reduce wear on the contact surface, extend the service life of the support structure, and avoid safety hazards such as medium temperature rise and magnet demagnetization caused by frictional overheating.

[0035] An extension rod 405 is fixedly installed on one side of the chuck 401. The extension rod 405 is slidably connected to the guide member 60. Rollers 406 are installed on both sides of the extension rod 405 and are tactilely connected to the guide member 60. The rollers 406 and the guide member 60 adopt a rolling engagement, changing the traditional sliding friction to rolling friction, which significantly reduces the movement resistance. The chuck 401 is connected to the guide member 60 through the extension rod 405, which can synchronously transmit the movement of the chuck 401 to the guide member 60 and the limiting seat 70, so that the clamping and centering action and the disengagement action of the insert 80 are completely synchronized, avoiding the situation of timing disorder, failure to establish support and failure to disconnect the original transmission, and improving the overall reliability of the mechanism.

[0036] To address the technical problems of bearing 9 wearing out and shaft 4 continuing to rotate, leading to further damage to bearing 9 and increased eccentricity of shaft 4, such as... Figures 4-8 As shown, the following preferred technical solutions are provided: like Figure 4 and Figure 7 As shown, the annular frame 50 includes an annular plate 501 and several connecting plates 502 fixed on the surface of the annular plate 501. The limiting seat 70 is slidably connected to the annular plate 501, and the several connecting plates 502 are all fixedly connected to the inside of the pump body 3. The limiting seat 70 and the annular plate 501 are slidably engaged, which can strictly limit the movement trajectory of the limiting seat 70, so that it can only move smoothly along the preset path.

[0037] like Figure 7As shown, the guide member 60 includes a frame plate 601 and a guide plate 602 slidably connected inside the frame plate 601. The frame plate 601 is fixedly connected to the annular plate 501 and the pump body 3. The extension rod 405 is slidably connected to the guide plate 602. Inclined grooves 603 are provided through both sides of the guide plate 602. Rollers 406 are slidably connected to the inclined grooves 603. Slider blocks 604 are fixedly installed on both sides of the guide plate 602. Both sliders 604 are slidably connected to the inside of the frame plate 601. The guide plate 602 is fixedly connected to the limiting seat 70. When the pawl 401 feeds radially toward the center of the shaft 4... The extension rod 405 on one side of the chuck 401 moves synchronously, and the rollers 406 on both sides of the extension rod 405 roll along the inclined groove 603 on the guide plate 602. Under the guidance of the inclined groove 603, the movement of the rollers 406 toward the surface of the shaft 4 is converted into the lateral movement of the guide plate 602. The guide plate 602 slides smoothly along the inside of the frame plate 601 through the sliders 604 on both sides, thereby driving the limiting seat 70 fixedly connected to the guide plate 602 to move laterally synchronously, and finally realizes the action of the insert 80 withdrawing from between the shaft 4 and the sleeve 10, completing the switching of the transmission path.

[0038] like Figure 8 As shown, the limiting seat 70 includes a positioning ring 701 and three limiting blocks 702 fixed on the surface of the positioning ring 701. The three limiting blocks 702 are slidably connected to the annular plate 501. The structure of the positioning ring 701 and the three limiting blocks 702 forms a sliding constraint between the limiting blocks 702 and the annular plate 501, which can ensure that the positioning ring 701 moves smoothly in the set direction and avoid circumferential deflection, radial shaking or jamming during the movement. This makes the disengagement and resetting action of the insert 80 accurate and reliable, and ensures smooth switching of the transmission path.

[0039] The insert 80 includes an insert block 801 and a roller 802 mounted on one end of the insert block 801. The insert block 801 is slidably connected to the sleeve rod 10 and the shaft rod 4, and the roller 802 is rotatably connected to the positioning ring 701. Under normal conditions, the insert block 801 is simultaneously inserted into the mating position of the sleeve rod 10 and the shaft rod 4, so that the shaft rod 4 can drive the sleeve rod 10 and the inner ring of the bearing 9 to rotate synchronously through the insert block 801, thus achieving normal transmission support. At the same time, the insert block 801 rotates inside the positioning ring 701 through the roller 802, so it does not hinder the normal rotation of the sleeve rod 10 and the bearing 9. When the chuck 401 feeds radially toward the center of the shaft rod 4, the extension rod 405 on one side of the chuck 401 moves synchronously, and the rollers 406 on both sides of the extension rod 405 roll along the inclined groove 603 on the guide plate 602, guided by the inclined groove 603. In this process, the movement of the roller 406 toward the surface of the shaft 4 is converted into the lateral movement of the guide plate 602. The guide plate 602 slides smoothly along the inside of the frame plate 601 through the sliders 604 on both sides, thereby driving the positioning ring 701, which is fixedly connected to the guide plate 602, to move laterally in sync. This causes the insert 801 to gradually slide out from between the shaft 4 and the sleeve 10 and completely disengage, thereby cutting off the transmission connection between the shaft 4 and the sleeve 10. This prevents the worn bearing 9 from participating in the rotation. The cooperation of the ball 403 and the ring 41 forms a new centering support for the shaft 4. After the high-level medium is transported, the pump body 3 can be inspected and repaired. The bearing 9 can be replaced, and the structure can be reset. The insert 801 can be manually inserted between the sleeve 10 and the shaft 4 for the next use.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fluoroplastic-lined permanent magnet leak-free magnetic pump, comprising a base (1) and a first motor (2) fixed to one side of the base (1), wherein a pump body (3) is also fixedly installed on one side of the base (1), and the first motor (2) is fixedly connected to one end of the pump body (3), characterized in that: The first motor (2) has a shaft (4) fixedly installed at its output end. An external magnetic rotor (5) is fixedly installed at one end of the shaft (4). An isolation sleeve (6) is provided inside the external magnetic rotor (5), and the isolation sleeve (6) is fixedly connected to the pump body (3). An impeller (7) is rotatably connected inside the pump body (3). An internal magnetic rotor (8) is fixedly installed at one end of the impeller (7). A bearing (9) is also installed inside the pump body (3). A sleeve rod (10) is fixedly installed inside the bearing (9). A housing (20) is installed inside the pump body (3). A driving component (30) is provided inside the housing (20). Several positioning rotating components (40) are slidably connected inside the housing (20). Connected to the drive component (30), the pump body (3) is fixedly connected to an annular frame (50). Several guide components (60) are provided on one side of the annular frame (50), and the positioning rotating component (40) is slidably connected to the guide component (60). A limit seat (70) is slidably connected on one side of the annular frame (50), and the limit seat (70) is fixedly connected to the guide component (60). Several inserts (80) are rotatably connected inside the limit seat (70), and the inserts (80) are all slidably connected to the sleeve rod (10) and the shaft rod (4). A displacement sensor (90) is installed inside the pump body (3), and the first motor (2), the displacement sensor (90) and the drive component (30) are all electrically connected through the controller.

2. The fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 1, characterized in that: An annular ring (41) is fixedly installed on the surface of the shaft (4).

3. The fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 1, characterized in that: The housing (20) has several sets of concave plates (201) installed inside, and the positioning rotating part (40) is slidably connected to the concave plates (201).

4. The fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 3, characterized in that: The drive unit (30) includes a second motor (301) and a bevel gear (302) fixed at the output end of the second motor (301). The second motor (301) is connected through the housing (20) and the pump body (3) on one side. The bevel gear (302) is rotatably connected to the housing (20). The gear disk (303) is rotatably connected inside the housing (20), and the bevel gear (302) is meshed with the gear disk (303). A planar thread (304) is provided on one side of the gear disk (303), and several positioning rotating parts (40) are meshed with the planar thread (304).

5. A fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 4, characterized in that: The plurality of positioning rotating parts (40) include a chuck (401) and an arc plate (402) fixed to one end of the chuck (401). The chuck (401) is engaged with a planar thread (304). A plurality of balls (403) are rotatably connected to one side of the planar thread (304). Limiting strips (404) are fixedly installed on both sides of the chuck (401), and the limiting strips (404) are slidably connected to the concave plate (201).

6. The fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 5, characterized in that: An extension rod (405) is fixedly installed on one side of the claw (401). The extension rod (405) is slidably connected to the guide (60). Rollers (406) are installed on both sides of the extension rod (405), and the rollers (406) are tumbledly connected to the guide (60).

7. A fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 6, characterized in that: The ring frame (50) includes a ring plate (501) and several connecting plates (502) fixed on the surface of the ring plate (501). The limiting seat (70) is slidably connected to the ring plate (501), and the several connecting plates (502) are all fixedly connected to the inside of the pump body (3).

8. A fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 7, characterized in that: The guide member (60) includes a frame plate (601) and a guide plate (602) slidably connected inside the frame plate (601). The frame plate (601) is fixedly connected to the annular plate (501) and the pump body (3). The extension rod (405) is slidably connected to the guide plate (602). The guide plate (602) has inclined grooves (603) through it on both sides. The roller (406) is slidably connected to the inclined grooves (603). The guide plate (602) has sliders (604) fixedly installed on both sides. Both sliders (604) are slidably connected to the inside of the frame plate (601). The guide plate (602) is fixedly connected to the limiting seat (70).

9. A fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 7, characterized in that: The limiting seat (70) includes a positioning ring (701) and three limiting blocks (702) fixed on the surface of the positioning ring (701). All three limiting blocks (702) are slidably connected to the annular plate (501).

10. A fluoroplastic-lined permanent magnet leak-free magnetic pump according to claim 9, characterized in that: The insert (80) includes an insert block (801) and a roller (802) installed at one end of the insert block (801). The insert block (801) is slidably connected to the sleeve rod (10) and the shaft rod (4), and the roller (802) is tumbledly connected to the positioning ring (701).

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