Multi-shaft multi-stage magnetic underflow jet stirring pump

Abstract

The application discloses a multi-shaft multi-stage magnetic liquid-under-spraying stirring pump, which comprises a lifting mechanism, a mounting plate arranged on the lifting mechanism, a rotating mechanism arranged on the mounting plate, at least one multi-stage magnetic liquid-under-spraying stirring pump, a pump shell and a pump transmission main body arranged in the pump shell and rotating, the pump transmission main body is arranged on the mounting plate, the pump shell is fixedly connected with the rotating mechanism and rotates by the rotating mechanism. The application can adjust the number of the multi-stage magnetic liquid-under-spraying stirring pumps according to actual needs by arranging at least one multi-stage magnetic liquid-under-spraying stirring pump on the mounting plate, the height of the multi-stage magnetic liquid-under-spraying stirring pump on the mounting plate can be adjusted by arranging the lifting mechanism, so that the spraying and stirring height is adjusted, and the waste liquid sediment layer in the tank can be sprayed and stirred in all directions by rotating the nozzle of the multi-stage magnetic liquid-under-spraying stirring pump by the rotating mechanism.

Description

Technical Field

[0001] This invention belongs to the field of magnetic pump technology, and specifically relates to a multi-axis, multi-stage magnetic submersible jet mixing pump. Background Technology

[0002] Radioactive waste liquids generated in the nuclear industry or nuclear-related activities will form a sediment layer of a certain thickness when stored in underground waste liquid storage tanks for a long time. When removing radioactive waste liquids, the sediment layer needs to be removed together. Therefore, the sediment layer needs to be stirred and diluted first.

[0003] Common mixing methods include impeller mixing and jet mixing. Impeller mixing is frequently used in the mixing of media in mechanical systems. It uses an external rigid contact impeller to generate axial flow, rotational flow, and turbulence in the surrounding media, thereby achieving the purpose of mixing. Jet mixing uses an internal impeller to pressurize the intake fluid and then eject it to achieve the purpose of flushing and diluting the media.

[0004] There are two types of drive shafts for transmitting power in agitation: mechanical seals and magnetic seals. Mechanical seals are dynamic seals, using various types of sealing rings to radially seal the rotating shaft while the sealing medium flows axially. Over time, leaks can easily occur, polluting the working environment, posing safety risks, and requiring frequent maintenance. Magnetic seals consist of an outer magnetic rotor, an isolation sleeve, and an inner magnetic rotor. The isolation sleeve seals the inner magnetic rotor and the medium within the working chamber. The motor drives the outer magnetic rotor, which in turn drives the inner magnetic rotor using magnetic coupling. This achieves contactless torque transmission and static sealing, completely eliminating medium leakage and solving the problems associated with mechanical seals.

[0005] Due to environmental and operational limitations related to the removal of radioactive waste, the agitator must penetrate through a flange orifice into the storage tank for mixing. Impeller agitators, with their shape and mixing effect, cannot meet the requirements of this scenario. While jet agitators, lacking an external impeller and possessing a compact structure, meet installation requirements and are theoretically feasible, in practice, their fixed installation and jetting angle create dead zones, resulting in uneven mixing of sediment in certain areas of the tank and unsatisfactory mixing. Furthermore, existing jet agitators have a fixed length, failing to achieve ideal mixing results in either shallow or deep waste tanks. Additionally, the performance of conventional jet agitators is unsuitable for use in radioactive environments.

[0006] To address the environmental pollution and personal injury caused by radioactive waste leakage, the clear liquid in the radioactive waste pool should be used to circulate, seal, and stir the sedimentation layer. To achieve efficient stirring of the radioactive waste sedimentation layer, it is necessary to optimize and improve the structure of the existing stirring device. Summary of the Invention

[0007] The main objective of this invention is to provide a multi-axis, multi-stage magnetic submersible jet agitator pump, which solves the technical problems of existing jet agitators mentioned in the background art.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A multi-shaft, multi-stage magnetic submersible jet agitator pump, comprising:

[0010] A lifting mechanism, on which a mounting plate is provided;

[0011] A rotating mechanism, wherein the rotating mechanism is disposed on the mounting plate;

[0012] At least one multi-stage magnetic submersible jet agitator pump, the multi-stage magnetic submersible jet agitator pump including a pump housing and a pump drive body disposed within the pump housing and rotating therein, the pump drive body being disposed on the mounting plate, the pump housing being fixedly connected to the rotating mechanism and driven to rotate by the rotating mechanism.

[0013] For example, the lifting mechanism includes a lifting motor and a lifting worm gear structure driven by the motor. A lifting lead screw is sleeved on the lifting worm gear structure, and a lifting nut is sleeved on the lifting lead screw. The lifting nut is fixed to the mounting plate.

[0014] Furthermore, the lifting mechanism also includes a guide rod, on which a guide sleeve is slidably fitted, and the guide sleeve is fixed to the mounting plate.

[0015] For example, the rotating mechanism includes a rotary motor and a rotating worm gear structure driven by it, and the pump housing is rotatably sleeved on the rotating worm gear structure.

[0016] Furthermore, the pump drive body includes a pump motor mounted on a mounting plate, the output end of the pump motor is connected to an input shaft, the input shaft is connected to a permanent magnet drive, the permanent magnet drive is connected to an input pump shaft, and an impeller and guide vanes are mounted on the input pump shaft;

[0017] Preferably, the pump housing includes a rotating sleeve fixedly connected to the rotating mechanism, the rotating sleeve being sleeved on the input shaft and the two being rotatable relative to each other, the rotating sleeve being connected to a rotating upper sleeve, the rotating upper sleeve being connected to an input pump sleeve, and the input pump sleeve being connected to a nozzle.

[0018] Preferably, at least one connecting shaft is connected between the input shaft and the permanent magnet drive; correspondingly, at least one connecting sleeve is connected between the rotating upper sleeve and the input pump sleeve, the length and number of the connecting shaft and the connecting sleeve are corresponding, and the connecting sleeve is sleeved on the connecting shaft.

[0019] Preferably, at least one pump connecting shaft is connected to the end of the input pump shaft, and an impeller and guide vanes are provided on the pump connecting shaft; correspondingly, at least one pump connecting sleeve is connected between the input pump sleeve and the nozzle, and the length and number of the pump connecting shaft and the pump connecting sleeve are corresponding, with the pump connecting sleeve sleeved on the pump connecting shaft.

[0020] Preferably, an alloy sliding bearing assembly is fitted onto the input pump shaft and the pump connecting shaft.

[0021] Preferably, the permanent magnet drive includes an outer magnetic rotor, an isolation sleeve, and an inner magnetic rotor. The outer magnetic rotor is connected to the end of the connecting shaft, the isolation sleeve is connected to the input pump sleeve, and the inner magnetic rotor is connected to the head end of the input pump shaft. The outer magnetic rotor and the inner magnetic rotor are positioned correspondingly.

[0022] Preferably, the input shaft and the rotating sleeve are directly provided with a fixed sleeve, the fixed sleeve is fixedly provided on the mounting plate, the input shaft can rotate inside the fixed sleeve, and the rotating sleeve can rotate outside the fixed sleeve.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The multi-axis, multi-stage magnetic submersible jet agitator pump of the present invention features at least one multi-stage magnetic submersible jet agitator pump mounted on a mounting plate, with the number of pumps adjustable according to actual needs. A lifting mechanism allows adjustment of the height of the multi-stage magnetic submersible jet agitator pumps on the mounting plate, thereby adjusting the jet agitation height. A rotating mechanism drives the nozzles of the multi-stage magnetic submersible jet agitator pumps to rotate, achieving omnidirectional jet agitation of the waste liquid sedimentation layer in the storage tank. Multiple matching connecting shafts, connecting sleeves, pump connecting shafts, and pump connecting sleeves allow adjustment of the pump head to agitate liquids at different depths and adjust the jet flow rate and pressure as needed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the principle structure of an embodiment of the present invention;

[0026] Figure 2 This is a structural cross-sectional view of an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the lifting mechanism according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the rotating mechanism according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of a multi-stage magnetic submersible jet stirring pump according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the pump head structure according to an embodiment of the present invention;

[0031] Figure 7 This is an exploded view of the structure according to an embodiment of the present invention.

[0032] In the diagram: Ⅰ. Lifting and rotating mechanism; Ⅱ. Multi-stage magnetic submersible jet mixing pump;

[0033] 1. Workbench; 2. Lower mounting plate; 3. Lifting motor; 4. Lifting worm gear; 5. Lifting worm wheel; 6. Upper mounting plate; 7. Lifting nut; 8. Lifting lead screw; 9. Pump motor bracket; 10. Pump motor; 11. Pump motor synchronous pulley; 12. Input shaft synchronous pulley; 13. Input shaft; 14. Upper bearing cover; 15. Sliding base plate; 16. Guide rod; 17. Guide sleeve; 18. Rotary motor bracket; 19. Rotary motor; 20. Rotary worm gear; 21. Rotary worm wheel; 22. Fixed sleeve; 23. Rotary sleeve; 24. Lower shaft 25. Cover; 26. Rotating upper sleeve; 27. Connecting sleeve joint; 28. Connecting shaft; 29. ​​Connecting sleeve; 30. Shaft coupling; 31. Pressure cover; 32. Outer magnetic rotor; 33. Isolation sleeve; 34. Inner magnetic rotor; 35. Input pump shaft; 36. Input pump sleeve; 37. Pump connecting sleeve joint; 38. Pump connecting shaft; 39. Pump connecting sleeve; 40. Impeller; 41. Guide vane; 42. Alloy sliding bearing assembly; 43. Nozzle; 44. Front bearing seat of rising worm; 45. Front bearing seat of rotating worm; 46. Rear bearing seat of rising worm; 47. Rear bearing seat of rotating worm. Detailed Implementation

[0034] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] This invention discloses a multi-shaft, multi-stage magnetic submersible jet agitator pump. Its multi-shaft design achieves high-efficiency self-circulating jet agitation, contactless power transmission and static sealing, as well as smooth completion of protective actions. It features mobile jet agitation capabilities and comprehensive jet agitation without dead zones. This multi-shaft, multi-stage magnetic submersible jet agitator pump utilizes magnetic coupling technology and special alloy bearings to create a shaftless, seal-free jet agitator pump. It features a slender shaft drive and a bushing structure, offering advantages such as leak-free static sealing, compact structure, reliable operation, maintenance-free operation, and long service life. It can be applied to the jet agitation of media under similar working conditions in nuclear industry radioactive waste sedimentation layers or other industries.

[0036] See Figure 1 This invention discloses a multi-axis, multi-stage magnetic submersible jet agitator pump, comprising a lifting and rotating mechanism I and at least one multi-stage magnetic submersible jet agitator pump II mounted on the lifting and rotating mechanism I. The lifting and rotating mechanism I provides mounting support for the multi-stage magnetic submersible jet agitator pump II, and is used to adjust the setting height of the multi-stage magnetic submersible jet agitator pump II and drive the multi-stage magnetic submersible jet agitator pump II to rotate and jet. The multi-stage magnetic submersible jet agitator pump II realizes power transmission, magnetic sealing, self-circulating jet agitation functions, and protection actions.

[0037] See Figure 2 In this embodiment, a lower mounting plate 2 is provided on the workbench 1. The lifting and rotating mechanisms of the lifting and rotating mechanism I are fixedly mounted on the lower mounting plate 2. The multi-stage magnetic submersible jet stirring pump II includes a pump housing and a pump drive body that rotates within the pump housing. The pump drive body is mounted on an upper mounting plate 6. The pump housing is fixedly connected to the rotating mechanism and is driven to rotate by the rotating mechanism. The lifting mechanism is used to adjust the lifting of the upper mounting plate 6, thereby changing the up and down movement of the multi-stage magnetic submersible jet stirring pump II to meet the suction and ejection requirements of the multi-stage magnetic submersible jet stirring pump II at different depths across the entire liquid surface. In this embodiment, the entire device structure is stable and will not experience displacement or shaking during use.

[0038] See Figure 2 and Figure 3 The lifting mechanism includes a lifting motor 3 and a lifting worm gear structure driven by it. The lifting motor 3 provides power for the lifting motion. A lifting lead screw 8 is sleeved on the lifting worm gear structure, and a lifting nut 7 is sleeved on the lifting lead screw 8. The lifting nut 7 is fixed to the upper mounting plate 6. In this embodiment, a hole is made in the upper mounting plate 6, and screws are used to connect the lifting nut 7 and the upper mounting plate 6 together. The lifting motor 3 is fixed to the lower mounting plate 2 with screws. The lifting worm gear structure includes a lifting worm 4 and a lifting worm wheel 5. The front and rear ends of the lifting worm 4 are mounted in the front bearing seat 43 and the rear bearing seat 45 of the lifting worm 4 by bearings. A motor coupling is used to connect the lifting worm 4 and the lifting motor 3 into a single structure. The lifting lead screw 8 passes through the center hole of the lifting worm wheel 5 and is fixedly connected to the lifting worm wheel 5. Exemplarily, the lifting worm wheel 5 and the lifting lead screw 8 can be connected by a keyway and locked with a nut.

[0039] Furthermore, the lifting mechanism also includes a guide rod 16, on which a guide sleeve 17 is slidably sleeved, and the guide sleeve 17 is fixed to the upper mounting plate 6. Specifically, the guide sleeve 17 and the upper mounting plate 6 can be connected as one unit by screws.

[0040] In this embodiment, both the lifting lead screw 8 and the guide rod 16 are mounted on the lower mounting plate 2. The lifting lead screw 8 and the lower mounting plate 2 have a clearance fit, while the guide rod 16 and the lower mounting plate 2 have an overfit. This ensures that the lifting lead screw 8 can rotate with the lifting worm gear 5 and restricts the rotation of the guide rod 16, thereby improving positioning accuracy. The lifting motor 3 is driven by a variable frequency motor, which facilitates control of the lifting speed. The use of a U-shaped four-linkage worm gear rotation and four-corner guide rod positioning mechanism ensures the stability of the lifting motion, and limit switches can be set at the top and bottom to prevent over-limit movement.

[0041] During operation, the lifting motor 3 drives the lifting worm gear 4 to rotate, which in turn drives the lifting worm wheel 5 to rotate at a reduced speed. This synchronously drives the lifting screw 8 to rotate. Under the mechanical transmission action of the lifting nut 7, the upper mounting plate 6 and the rotating mechanism mounted on the upper mounting plate 6 and the multi-stage magnetic submersible jet mixing pump II move vertically up and down, thereby realizing the lifting and lowering of the multi-stage magnetic submersible jet mixing pump II, expanding the jet mixing range, and enhancing the up and down jet mixing effect.

[0042] See Figure 2 and Figure 4 The rotating mechanism includes a rotary motor 19 and a rotating worm gear structure driven by it. The pump housing is rotatably sleeved on the rotating worm gear structure, and a nozzle 42 is provided at the bottom end of the pump housing. In this embodiment, a rotary motor bracket 18 is fixed on the upper mounting plate 6, and the rotary motor 19 is mounted on the rotary motor bracket 18. The rotating worm gear structure includes a rotating worm wheel 21 and a rotating worm 20. The two ends of the rotating worm 20 are mounted on the front bearing seat 44 and the rear bearing seat 46 of the rotating worm using bearings. The rotating worm wheel 21 is connected to the rotary motor 19 as a whole through a motor coupling. The rotary motor 19 provides power for the rotational motion. The front bearing seat 44 and the rear bearing seat 46 of the rotating worm are mounted on the upper mounting plate 6.

[0043] During operation, the rotary motor 19 drives the rotary worm 20 to rotate, which in turn drives the rotary worm wheel 21 to rotate at a reduced speed. This synchronously drives the nozzle 42 on the pump housing to rotate, and the medium is sprayed out from the nozzle of the multi-angle nozzle 42 of the multi-stage magnetic liquid jet mixing pump II to achieve the effect of rotary jet mixing.

[0044] See Figure 5 , Figure 6 , Figure 7The pump drive body of the present invention includes a pump motor 10 mounted on an upper mounting plate 6. The output end of the pump motor 10 is connected to an input shaft 13. The input shaft 13 is connected to a permanent magnet drive. The permanent magnet drive is connected to an input pump shaft 34. An impeller 39 and a guide vane 40 are mounted on the input pump shaft 34. The pump housing includes a rotating sleeve 23 fixedly connected to a rotating mechanism. The rotating sleeve 23 is sleeved on the input shaft 13 and the two can rotate relative to each other. The rotating sleeve 23 is connected to a rotating upper sleeve 25. The rotating upper sleeve 25 is connected to an input pump sleeve 35. The input pump sleeve 35 is connected to a nozzle 42. The input shaft 13 is located inside the connected rotating sleeve 23 and rotating upper sleeve 25. Most of the input pump shaft 34 is located inside the input pump sleeve 35, and a small part extends into the rotating upper sleeve 25 and is connected to the input shaft 13.

[0045] In this embodiment, a pump motor bracket 9 is movably mounted on the upper mounting plate 6 using bolts. The pump motor bracket 9 can move slightly laterally on the upper mounting plate 6. The pump motor 10 is mounted on the pump motor bracket 9 using screws. The output end of the pump motor 9 is connected to a pump motor timing pulley 11, and the upper end of the input shaft 13 is connected to an input shaft timing pulley 12. The pump motor timing pulley 11 and the input shaft timing pulley 12 are connected by a timing belt. The timing belt can be tensioned by moving the bolt fixing position on the pump motor bracket 9. Furthermore, an installation groove can be opened on the upper mounting plate 6, and a sliding base plate 15 can be placed in the installation groove. The sliding base plate 15 can move within a small range in the installation groove. The pump motor bracket 9 can be installed on the sliding base plate 15 in the same way. The sliding base plate 15 is placed in the installation groove in the upper mounting plate 6 with clearance fit on its front and rear sides. The position of the multi-stage magnetic submersible jet mixing pump II is changed by adjusting the left and right position of the sliding base plate 15 with bolts, and the center distance between the two multi-stage magnetic submersible jet mixing pumps II is changed to meet the installation and use requirements. Similarly, the position of the pump motor bracket 9 is adjusted by bolts to achieve the function of tensioning the synchronous belt.

[0046] Furthermore, a fixed sleeve 22 is provided between the rotating sleeve 23 and the input shaft 13. The fixed sleeve 22 is fixed to the bottom end face of the upper mounting plate 6. A bearing is provided between the rotating sleeve 23 and the fixed sleeve 22. The upper end of the rotating sleeve 23 is integrally connected to the upper bearing cover 14 by screws. A bearing is provided between the fixed sleeve 22 and the input shaft 13. The bottom end of the fixed sleeve 22 is integrally connected to the lower bearing cover 24 by screws. Thus, both the rotating sleeve 23 and the input shaft 13 can rotate freely. The rotation of the rotating sleeve 23 and the input shaft 13 is restricted by the fixed sleeve 22 and the bearings inside and outside the fixed sleeve 22. No deflection will occur during the rotation.

[0047] Furthermore, at least one connecting shaft 27 is connected between the input shaft 13 and the permanent magnet drive; correspondingly, at least one connecting sleeve 28 is connected between the rotating upper sleeve 25 and the input pump sleeve 35. The lengths and numbers of the connecting shaft 27 and the connecting sleeve 28 correspond, and the connecting sleeve 28 is fitted over the connecting shaft 27. In this embodiment, bearings and snap rings are used to install the connecting shaft 27 within the connecting sleeve joint 26, allowing it to float up and down with the bearings. Specifically, in this embodiment, the connecting shaft 27 is connected to the input shaft 13 via a shaft coupling 29. When multiple connecting shafts 27 are used, the connecting shafts 27 are also connected to each other via shaft couplings 29. Correspondingly, when the length of the connecting shaft 27 is extended, the number and length of the connecting sleeves 28 are also increased. The connecting sleeves 28 and the rotating upper sleeve 25 are connected via connecting sleeve joints 26. When multiple connecting sleeves 28 are connected, the connecting sleeves 28 are also connected to each other via connecting sleeve joints 26. Both the multi-segment connecting shaft 27 and the connecting sleeve 28 are designed with the same structure and can extend the pump head to achieve stirring of liquids at different depths.

[0048] Furthermore, when it is necessary to increase the driving force of the jet, at least one section of pump connecting shaft 37 is connected to the end of the input pump shaft 34. An impeller 39 and guide vanes 40 are mounted on the pump connecting shaft 37. Correspondingly, at least one section of pump connecting sleeve 38 is also connected between the input pump sleeve 35 and the nozzle 42. The lengths and numbers of the pump connecting shaft 37 and the pump connecting sleeve 38 correspond. The pump connecting sleeve 38 is fitted over the pump connecting shaft 37, and the pump connecting sleeve 38 and the nozzle 42 are connected as a single unit by threads. In this embodiment, the impeller 39 and guide vanes 40 are installed sequentially on the input pump shaft 34 and the pump connecting shaft 37. The input pump shaft 34 and the pump connecting shaft 37 are connected as a single unit using threaded connections. The pump connecting shaft 37 has a multi-segment identical structure design, and the multiple segments of the pump connecting shaft 37 are also connected by threads. The input pump sleeve 35 and the pump connecting sleeve 38 are connected as a whole by a pump connecting sleeve joint 36. The pump connecting sleeve 38 is a multi-section design with the same structure, and the multiple sections of the pump connecting sleeve 38 are also connected to each other by the pump connecting sleeve joint 36. The pump connecting shaft 37 and the pump connecting sleeve 38 adopt a multi-section combination connection to increase the number of impeller stages, thereby increasing the jet flow rate and pressure.

[0049] Furthermore, an alloy sliding bearing assembly 41 is fitted onto the input pump shaft 34 and the pump connecting shaft 37. The alloy sliding bearing assembly 41 is a dry friction sliding bearing structure. Specifically, the alloy sliding bearing assembly 41 is a combination of a radial alloy sliding bearing and an axial alloy thrust bearing. The radial alloy sliding bearing is fitted onto the input pump shaft 34 and the pump connecting shaft 37 to limit the rotation of the input pump shaft 34 and the pump connecting shaft 37, keeping them rotating around their axis. The axial alloy thrust bearing is located at both ends of the radial alloy sliding bearing to limit its rotation. The impeller 39, guide vane 40, and alloy sliding bearing assembly 41 are all installed in their designed positions with a small clearance fit. The impeller 39 and guide vane 40 are multi-stage structures that can be adjusted according to the injection pressure and flow rate at the application site. The pump motor 10 provides the multi-stage magnetic submersible jet agitator pump II with the main driving force for jet agitation and controllable injection pressure and flow rate.

[0050] Furthermore, the permanent magnet drive includes an outer magnetic rotor 31, an isolation sleeve 32, and an inner magnetic rotor 33. The outer magnetic rotor 31 is connected to the end of the connecting shaft 27, the isolation sleeve 32 is connected to the input pump sleeve 35, and the inner magnetic rotor 33 is connected to the head end of the input pump shaft 34. The outer magnetic rotor 31 and the inner magnetic rotor 33 are positioned correspondingly. In this embodiment, the pressure cap 30 and the connecting shaft 27 are connected together by screws, the outer magnetic rotor 31 and the connecting shaft 27 are connected together by a key and the pressure cap 30, the isolation sleeve 32 and the input pump sleeve 35 are connected together by screws, and the inner magnetic rotor 33 and the input pump shaft 34 are connected together by threads. The outer magnetic rotor 31, the isolation sleeve 32, and the inner magnetic rotor 33 do not contact each other and have a fixed air gap in the radial direction.

[0051] Furthermore, the outer magnetic rotor 31 and the inner magnetic rotor 33 can be inlaid with an integrally magnetized radial magnetic ring by adhesive bonding, and the surfaces of the outer magnetic rotor 31 and the inner magnetic rotor 33 are encapsulated with stainless steel to avoid contact with the medium.

[0052] Furthermore, the upper opening of the input pump sleeve 35 is provided with a flow hole, and the input pump shaft 34 and the pump connecting shaft 37 are provided with flow channels along their axes.

[0053] Preferably, this embodiment employs two multi-stage magnetic submersible jet agitator pumps II. One multi-stage magnetic submersible jet agitator pump II is mounted on the upper mounting plate 6, and the other multi-stage magnetic submersible jet agitator pump II is mounted on the sliding base plate 15. The center distance between the two multi-stage magnetic submersible jet agitator pumps II is changed by using the left-right adjustable function of the sliding base plate 15. The two multi-stage magnetic submersible jet agitator pumps II are set at different heights and rotate asynchronously. The staggered arrangement of the two pumps at different heights constitutes a dual-shaft compound design with a bushing structure. The asynchronous rotation control and staggered arrangement of the two multi-stage magnetic submersible jet agitator pumps II increase the jet agitation density and enhance the jet agitation coverage. Of course, according to actual needs, the number of multi-stage magnetic submersible jet agitator pumps II can be further increased.

[0054] The multi-stage magnetic submersible jet agitator pump II of this invention features a single-layer shell and a top-inlet, bottom-outlet design. The pump head is entirely immersed in the liquid, satisfying the self-circulating jet requirements while also accommodating the intake of clean liquid, reducing interference from jet agitation. A slender, flexible, multi-point sliding floating support shaft system reduces the impact of vibrations and loads caused by medium changes on the shaft, mitigating the risks associated with concentricity issues in multi-section connections. A magnetically balanced, optimized design employs an integrally magnetized, radially oriented inner magnetic rotor 33, an outer magnetic rotor 31, and a gapless alloy sliding bearing assembly 41 to withstand axial and radial forces generated by irregular medium movement, ensuring product reliability. The multi-point support structure of the alloy sliding bearing assembly 41, with its dry friction characteristics, requires no lubrication and is resistant to radiation, high temperatures, high pressures, wear, and strong corrosion, resulting in more stable operation and lower noise. A permanent magnet drive structure achieves zero leakage during the jet agitation process, eliminating internal leakage, improving efficiency, and extending service life. The isolation sleeve 32 provides a seal, and its appropriate wall thickness ensures the reliability and stability of the jet agitator pump operation. The differential pressure effect of the medium is used to cool the isolation sleeve 32 and lubricate the alloy sliding bearing, reducing energy consumption and environmental pollution, ensuring stable magnetic operation of the system, and improving transmission efficiency. The multi-stage axial flow impeller pressurization structure significantly increases the fluid pressure and flow rate at the nozzle 42, ensuring the stirring diameter. The pump motor 10 provides power to the multi-stage magnetic submersible jet mixing pump II. Flexible connections mitigate vibration damage to the slender shaft drive of the multi-stage magnetic submersible jet mixing pump II, ensuring system reliability.

[0055] During operation, the pump motor 10 drives the input shaft 13 of the multi-stage magnetic submersible jet agitator pump II to rotate at high speed via a synchronous belt. This rotation is achieved by the shaft coupling 29, which drives the connecting shaft 27 to rotate synchronously. The multi-segment combined connecting shaft 27 transmits power to the outer magnetic rotor 31, which also rotates synchronously. Due to the magnetic field between the outer magnetic rotor 31 and the inner magnetic rotor 33, the outer magnetic rotor 31, through magnetic coupling, drives the inner magnetic rotor 33 inside the isolation sleeve 32 to rotate synchronously. This, in turn, drives the input pump shaft 34 and the pump connecting shaft 37 to rotate, simultaneously driving the impeller 39 and guide vane 40 to rotate. The multi-stage axial flow impeller 39 draws in the medium from the pump head inlet, pressurizes it, and then ejects it from the lower nozzle 42, achieving a self-circulating jet agitation effect. Simultaneously, another stream of fluid enters the isolation sleeve 32 through the drainage hole on the input pump sleeve 35 and then flows out through the central hole channel of the input pump shaft 34, thus providing heat dissipation for the isolation sleeve 32. The torque of the pump motor 10 is transmitted to the impeller 39 without contact via magnetic coupling, achieving non-contact torque transmission and ensuring leak-free stirring. The rotational power from the rotating sleeve 23 of the lifting and rotating mechanism I drives the rotating upper sleeve 25 to rotate circumferentially. Through the connection of the connecting sleeve joint 26, the rotational motion of the upper sleeve 25 is transmitted to the connecting sleeve 28, driving the input pump sleeve 35 to rotate. Then, through the connection of the pump connecting sleeve joint 36, the rotational motion of the input pump sleeve 35 is transmitted to the pump connecting sleeve 38, driving the nozzle 42 to rotate, thus achieving circumferential rotation of the pump head. The pump motor 10 provides the jetting power and controllable jetting flow and pressure. In case of overload, the outer magnetic rotor 31 and the inner magnetic rotor 33 slip relative to each other, protecting the motor. The automatic protection function of the pump motor 10 ensures the normal operation of the multi-stage magnetic submersible jet stirring pump II.

[0056] The multi-axis, multi-stage magnetic submersible jet agitator pump of the present invention achieves high-efficiency self-circulating jet agitation, contactless power transmission and static sealing, as well as smooth completion of protection actions. It has a mobile jet agitation function, with no dead angles in the overall jet agitation, compact structure, reliable operation, maintenance-free operation, long service life, and avoids environmental pollution and personnel injury caused by radioactive waste liquid leakage.

[0057] 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.

[0058] 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 multi-axis, multi-stage magnetic submersible jet mixing pump, characterized in that, include: A lifting mechanism, on which a mounting plate is provided; A rotating mechanism, wherein the rotating mechanism is disposed on the mounting plate; At least two multi-stage magnetic submersible jet stirring pumps, each of the multi-stage magnetic submersible jet stirring pumps including a pump housing and a pump drive body disposed within the pump housing and rotating therein, the pump drive body being disposed on the mounting plate, and the pump housing being fixedly connected to the rotating mechanism and driven to rotate by the rotating mechanism; The pump drive body includes a pump motor mounted on a mounting plate. The output end of the pump motor is connected to an input shaft. The input shaft is connected to a permanent magnet drive. The permanent magnet drive is connected to an input pump shaft. The end of the input pump shaft is connected to at least one pump connecting shaft. The input pump shaft and the pump connecting shaft are equipped with multi-stage impellers and guide vanes. The at least two multi-stage magnetic submersible jet stirring pumps are staggered in height and their rotational motion is not controlled synchronously. The pump housing includes a rotating sleeve fixedly connected to the rotating mechanism. The rotating sleeve is sleeved on the input shaft and the two can rotate relative to each other. The rotating sleeve is connected to a rotating upper sleeve, the rotating upper sleeve is connected to an input pump sleeve, and the input pump sleeve is connected to a nozzle. At least one connecting shaft is connected between the input shaft and the permanent magnet drive; correspondingly, at least one connecting sleeve is connected between the rotating upper sleeve and the input pump sleeve, the length and number of the connecting shaft and the connecting sleeve are corresponding, and the connecting sleeve is sleeved on the connecting shaft; At least one pump connecting sleeve is connected between the input pump sleeve and the nozzle. The length and number of the pump connecting shaft and the pump connecting sleeve correspond to each other. The pump connecting sleeve is sleeved on the pump connecting shaft. An alloy sliding bearing assembly is fitted onto the input pump shaft and the pump connecting shaft; The permanent magnet drive includes an outer magnetic rotor, an isolation sleeve, and an inner magnetic rotor. The outer magnetic rotor is connected to the end of the connecting shaft, the isolation sleeve is connected to the input pump sleeve, and the inner magnetic rotor is connected to the head end of the input pump shaft. The outer magnetic rotor and the inner magnetic rotor are positioned correspondingly.

2. The multi-axis, multi-stage magnetic submersible jet mixing pump according to claim 1, characterized in that, The lifting mechanism includes a lifting motor and a lifting worm gear structure driven by the motor. A lifting lead screw is sleeved on the lifting worm gear structure, and a lifting nut is sleeved on the lifting lead screw. The lifting nut is fixed to the mounting plate.

3. The multi-axis, multi-stage magnetic submersible jet mixing pump according to claim 2, characterized in that, The lifting mechanism also includes a guide rod, on which a guide sleeve is slidably fitted, and the guide sleeve is fixed to the mounting plate.

4. The multi-axis, multi-stage magnetic submersible jet mixing pump according to claim 1, characterized in that, The rotating mechanism includes a rotary motor and a rotating worm gear structure driven by it, and the pump housing is rotatably sleeved on the rotating worm gear structure.

5. The multi-axis, multi-stage magnetic submersible jet mixing pump according to claim 1, characterized in that, The input shaft and the rotating sleeve are directly provided with a fixed sleeve, which is fixedly installed on the mounting plate. The input shaft can rotate inside the fixed sleeve, and the rotating sleeve can rotate outside the fixed sleeve.

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